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Issue 15057: Heavy battery drain after Gingerbread upgrade on Nexus One
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Closed:  Apr 2011

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Reported by, Feb 26, 2011
After upgrade Nexus One to Gingerbread I suffer a huge battery drain. The battery can't reach one day and during the same idle period one n1 froyo power consumption was 2%, n1 with gingerbread power consumption was 7%
Feb 26, 2011
Make sure you are signed out of Google Latitude.   
Feb 27, 2011
I have the same problem. In battery stats I have 'Android OS' using 40% of the battery
Feb 27, 2011
After sitting idle for around four hours my Nexus One is completley flat. It appears a large group of people are having the same issue.
Feb 27, 2011
With a moderate use by Nexus One and Gingerbread can't reach 1 day on. With Froyo it could reach 1 day and an half :(
Feb 27, 2011
I see the same symptoms as IsaacPE15.  Battery life is much worse than before the Gingerbread upgrade, and 'Android OS' is using 48% of the battery.
Feb 27, 2011
This same exact thing happened to me the first full day of use after I installed Gingerbread on my Nexus One.  And as far as Google Latitude is concerned - Never used it, never signed up for it.

The day after, my battery use has been much better.  Android OS has accounted for only 2% of my battery use so far. I did, however, make some changes - I uninstalled my Weather Channel app (there were nearly 4 processes running, so I removed it) and I also disabled AirSync on DoubleTwist.  I plan on adding each one back (by itself) over the next couple of days to see if one of those is responsible.
Feb 27, 2011
#7 rocas.spb
The same situation. Android drains 40% of battery in 9 night hours on the table. Battery use shows about 50% of usage by android os.
Feb 28, 2011
Why this problem have Priority-Medium? It must be high priority, it make my Nexus One unusable!!
Feb 28, 2011
The problem is that gingerbread have a bug with wifi, if you use wifi off when screen off the bug appears, if select never turn off, the bug dissapears

Please google, solve that bug pleaseeee
Feb 28, 2011
I have the same issue as IsaacPE15.  When Wi-Fi is off I do not have this problem.  Could be a Maps interaction -- it seems to keep the device awake a lot (according to the battery status screens).
Feb 28, 2011
#11 FatJoe79
I can confirm this on my Nexus One with Gingerbread. It only happens when wifi is on. The "turn wifi off when screen is off" option does not seem to work properly. There is somehow also a connection to Google Maps... but I can't track the problem here... it is a feeling.
Feb 28, 2011
so I unplug my phone at 7AM and use it normally and by 3PM it has 15% battery left and dies an hour later... this has made me miss calls that were important to me even if I ain't no Jack Bower.
pls fix it googles 
Mar 1, 2011
Same problem. Android OS consumes about 50%. Had 70% of battery left when i went to bed, 8 hours later the phone was dead. Uninstalled all apps and made factory reset and tried it again with the same result, android consuming 40-50% of battery power.
Mar 1, 2011
Same here: with 2.2.2 it dropped 10% during a night (8-9hours, everything on except bluetooth ), now with 2.3.3 it drops more than 30%. 

In battery usage Android OS is on the top with up to 68%.

Problem seems to go away when manually turning off WIFI ( i have WIFI off when screen off policy)

Workaround: turn off WIFI manually when not used 

Mar 1, 2011
Same problem here. I hope somebody can help.
Mar 1, 2011
I think it's not only a standby with wifi on problem. I have wifi off most time of the day but now with Gingerbread I go to bed having about 20-25% battery left, before with Froyo I used to have 40-45%. And now I use less the phone due the fear to run out of battery during the day.
Mar 1, 2011
Same problem here.
But I'm also uncertain the problem is just because of the WIFI. If I look at the new battery status graph, the battery drops as much with or without the WIFI turned on, as off.
Mar 1, 2011
#19 rocas.spb
I've turned WiFi off and battery usage became absolutely normal, like it was on Froyo. 
Then turned it on for a few hours again and graph steepness raised high.
Mar 1, 2011
I think bug only happens once you connect to a wifi. So if u reboot it will be ok,even if wifi is on, until u first connect to any wifi.can anyone confirm?
Mar 1, 2011
I think bug only happens once you connect to a wifi. So if u reboot it will be ok,even if wifi is on, until u first connect to any wifi.can anyone confirm?
Mar 1, 2011
#22 dag.rende
Android 35% battery for me. Friday night I almost couldn't buy the underground ticket home - we buy tickets by SMS here in Stockholm. It was bright red and I sent the ticket request SMS, got the answer ticket. On the way down the escalator I felt the N1 death throe in my pocket.
Mar 1, 2011
#23 FatJoe79
 I can confirm the following:

When Wifi is off, battery consumption is normal. When Wifi is on, then the battery consumption is also normal. 

The increased consumption only occurs, when I have the wifi sleep policy set to "sleep while display is off". In this case the battery consumption is very high while the display is off.

As a workaround I now keep my wifi always on. Battery consumption is OK this way.
Mar 1, 2011
Confirm heavy battery drain with enabled Location & Security -> Use wireless networks / Use GPS satellites. I've disable both options and now my battery life is normal.

With enabled "Location & Security" options battery eaten by "Android OS" process (about 40-55%).
Mar 1, 2011
Undocked my N1 around 6:45 this morning; by 8:00 tonight was basically at zero (almost no use; poor network strength with relatively frequent E/3G switches).

When I inspected the battery usage, "Android OS" was 50% and "Display" was 26%.  

Any way to debug this further?
Mar 1, 2011
Had the same problem, I turned off WIFI and I am getting better usage than when I was running 2.2. 

Manually turn off WIFI when not in use.
Mar 1, 2011
Wifi isn't involved in my phone problem because I always turn it off manually, but I turned off wireless and gps localization and now my battery indicator doesn't seems the New Year's Eve countdown anymore. I think it's a problem in all idle functions.
Mar 2, 2011
Same here upgrade yesterday am, phone flat sometime overnight heavy OS usage. We need an urgent fix.
Mar 2, 2011
i turned of latitude and now battery use seems to be back to normal
Mar 2, 2011
I to am having same battery problem. It went away for a few days & is now back. Only change is 2.3.3
Mar 2, 2011
Only changing Wi-Fi sleep policy to Never from "Never when plugged in" fixed this for me for now.  Went from ~ %50 Android CPU OS, down to %15 after 5h 35m.  Latitude made no difference.  I have Wi-Fi On, and Location & Security -> Use wireless networks / Use GPS satellites" On.
Mar 2, 2011
Same issue here. When I stopped message Google service, it improves a bit...
Mar 2, 2011
I have the same problem with my nexus one after the gingerbread update.
Mar 2, 2011
Same issue here; wi-fi sleep policy related?
Mar 2, 2011
Same issue, after reading the comments turned off WiFi completely.  Still very degraded battery performance. Can't make it through 8 hours of normal use, used to be 2 days on Froyo
Mar 2, 2011
Same problem here.  2.3.3 with wifi on doesn't appear to sleep properly when the N1 is sleeping.  The battery meter shows wifi "awake" consistently eventhough screen is off.
Mar 2, 2011
Battery life is now really bad in my Nexus One since receiving the OTA 2.3.3 update. Everything else works well. WiFi has been improved. But battery life is pathetic. Just over 12 hours on standby.
Mar 2, 2011
I found that turning my wifi sleep policy from "when screen is off" to "never" restored my battery life to Froyo levels.
Mar 2, 2011
I've never had great battery life, but now my phone is hot and turns itself off without any use, gps/wifi are off, only using 3g without sync on, someone develop better batteries for once and for all!
Mar 3, 2011
#40 rocas.spb
I can confirm that "Always on" WiFi policy solves the problem for me
Mar 3, 2011
Observations so far:

Battery drops during night (8hours), in idle from 100% to
- 93 % if WIFI is off - this is battery than 2.2.2
- 75 % if WIFI is on and sleep policy is: when screen off
- 55 % if WIFI is on and sleep policy is: never when plugged in

Mar 3, 2011
got update in the morning. yay, 2.3.3 for my Nexus One! :D had it plugged into computer for testing my app all day, charged to 100% when I left work. one hour later battery has dropped to 60%. One hour in transit between work and home = checking twitter, sending an sms and updating Gentle Alarm, aprox awake time = 15 minutes. 

Same time with froyo, and the battery had dropped maxmaxmax 10%. 

During night time, not plugged in, battery drops from 50% to 30%. (aprox 8hrs sleep ie no touching phone)
same time with froyo, and the battery had dropped maxmaxmax 5%.

my Wifi is always off and Android System never goes above 7% load.. Screen is on darkest and that still drains over 70%....... What's wrong?


I do hope a little fix is on its way ota.... :)
Mar 3, 2011
I am having the same issue after upgring to 2.3.3. "Android OS" is at >50% battery usage.
Mar 3, 2011
I had the same issue.

After I disabled google latitude everything is back to normal battery usage.
I am not sure if I ever enabled latitude (by accident) or if the update did it.
Mar 3, 2011
I can also confirm that "always on" wifi solved the problem for me.  Night and day difference.
Mar 3, 2011
With wifi and localization off it seems a little better but far away from froyo battery performances. It seems also 3g under Gingerbread use more battery than Froyo.
Is it possible to rollback to Froyo without unlock the phone?
Mar 3, 2011
#48 FatJoe79
I also can confirm that "always on" wifi definitely solves the problem on my nexus 1, and also on a friend's nexus s.

It may be possible that Latitude made the issue with wlan unable to sleep worse. I tested disabling Latitude, but I cannot definitely confirm a connection to the heavy battery drain since 2.3.3. 
Mar 3, 2011
I changed my wi-fi sleep policy to "Never" and battery use is better than with FroYo.  12 hours off a full charge and I have 67% battery left with moderate use today.  The rest of Gingerbread is sweet!
Mar 3, 2011
#50 mikegleasonjr
Same here... wayyyyy better than froyo, thanks guys ! Gingerbread is sweet !
Mar 3, 2011
I have this issue as well after installing Gingerbread.

Leaving wifi manually turned off, Battery Use reports Android OS to use around 4-5%
If I leave it on, Android OS' battery usage jumps to up 35-40%.

Model number: Nexus One
Android version: 2.3.3
Baseband version:
Build number: GRI40

Mar 4, 2011
I see this problem as well. Batter use by Android OS have sky rocketed. I'm turning off Latitude now and charging. I'll test the WiFi solution separately later.

Model Number: Nexus One
Android version: 2.3.3
Baseband version:
Kernel version: android-build@apa28 #1
Build number: GRI40
Mar 4, 2011
#53 mikegleasonjr
By putting "always on" to the wifi sleep policy, I'm now at 25% battery after 1 day 7 hours of usage (since last charge)

I was barely making 20 hours before.
Mar 4, 2011
I also experienced this issue when I upgraded to 2.3.3

The recommendation of changing the wifi sleep setting to 'Never' appears to have worked for me as well.

I didn't know where to change the sleep setting but this webpage helped me find it.

Model Number: Nexus One
Android version: 2.3.3
Baseband version:
Kernel version: android-build@apa28 #1
Build number: GRI40

Mar 4, 2011
Android O/S used 55% battery here (over a 1 day period). No phone calls where made, only sent 2 texts, rest of the time phone has been on idle (apart from turning the screen every now and then to check the time).
Mar 4, 2011
I am having the same issue. Slept at night with 49% battery. Woke up at 6:30 AM with a dead phone. Now a days i have to charge a phone twice a day. Gooooooooooooogle... plz fix.
Mar 4, 2011
I have two N1s one is a T-Mobile version (unlocked) working on the AT&T Edge network, and the other is an AT&T version.  The AT&T version on 2.3.3 works fine... no issues
The T-Mobile version dies after about 8 - 10 hrs on standby.  Android OS consuming 70% of the battery.  What's up and when can we expect a fix?
Mar 4, 2011
No issues here.  Really, I'm not trolling.  People have been reporting google voice issues and now this, which I have not experienced on my N1 T-mobile.
Mar 4, 2011
I also have this issue on my N1 with gingerbread. 
Mar 4, 2011
I don't have that battery drain issue at all.

But one bug thats in gingerbread that ive notice.. sometimes the keyboard will vanish... and have to reboot to get it back..

Happened twice now since Gingerbread
Mar 4, 2011
Same issue here, though intermittently, and seems to go way after a reboot. Noticed that AndroidOS is high in the battery use chart when the problem is happening. Also noticed that the gps icon appears in the top bar far more than it used to.
Mar 4, 2011
I am having the same issue.  If fact, as I type this (4:30 CT), my phone just shut down because the battery is too low and I have hardly used it today.  It used to last all day and I would still have around 20 to 30% left.  I do keep my wifi on, and will try to work around it by turning it off.
Mar 4, 2011
About the comment #60, I experienced the same issue, but tought it was a Swype problem. Maybe open a new thread to report it?
Mar 4, 2011
I have the same problem.  I pulled it off the charger this morning and right now have 50% battery life.. it's been idle all day.  :(
Mar 4, 2011
Same issue here - after update I'm all excited about new version but disappointed by "new" batter drain. Going to try WiFi fix reported earlier (setting to never sleep)
Mar 4, 2011
I had issues with Swype too but an uninstall and installing the latest version fixed it.
Mar 4, 2011
Battery is practically dead after about 8-9 hours, with light use.
Mar 4, 2011
I swear to christ Google is a fuckin joke. 
Mar 4, 2011
Same issue. Full charge, only phone, no data, no GPS, no wifi, in sleep mode. Tried to wake-up 8 hrs later it had turned itself off from low battery. 
Mar 4, 2011
This application maybe fine with those who are willing to wear reading glasses full time or those with better than perfect vision but it is terrible for those of us over 40. The new operating system changed the icons at the top of the screen so that they are about 50% smaller than in Froyo 2.2. In addition, instead of being colored icons on a gray background, they are now dark green on a black background. I for one can't read them. Oh, and the battery meter no longer reports the percentage of charge remaining. And they dare to call this an improvement ... not in my eyes.

Unlike many windows programs where a roll-back is possible, we seem to be stuck with this new SUCKY "up-grade."

I want my Android Froyo2.2 back ... BIG TIME
Mar 4, 2011
I have noticed that even though the manage application brings up the running services it is not registering all of the applications running. I have checked numerous applications I have started and only half are listedas running. If I force stop the ones I know are still running but, are not listed in the running services section I get a decent battery life improvement. 
Mar 4, 2011
you can see my battery drop.  wont even last the day sitting n my desk.
Mar 4, 2011
This is happening to my phone as well. OS Batter usage averaging about 50%. Prior to Gingerbread it was less then 10%.
Mar 4, 2011
Is there any planned fix from Google? So many people have this issue ...  

Mar 4, 2011
Google seems to be too busy playing with cars to do basic QA work.
Mar 4, 2011
Battery life on my wife's N1 since the update is AWFUL.  I mean, it wasn't great before but it was useable.  Now it barely makes it 15 hours on a charge.

What a joke, Google.  My iPhone 4 battery lasts me almost 3 days between charges!
Mar 4, 2011
+1 for crappy gingerbread flavored battery.
Mar 4, 2011
My battery lifetime is markedly reduced after the "upgrade" to Gingerbread.  I can't see that I gained anything from this OTA.

I hardly used my phone today and the battery was nearly dead when I arrived home.

I'm not very impressed by Google's testing, given how long it took for Gingerbread to be relesed.

Mar 5, 2011
Same issue, but battery usage points to Facebook as the culprit. Signed out of FB, same results.
Mar 5, 2011
Been messing around with BatteryFu since the update. I normally hate apps like that and don't think they should be necessary, but since i installed it i'm back to original battery life.
Mar 5, 2011
Over air Gingerbread update on stock N1 direct from Google.

Went to bed on 35% battery on Gingerbread, woke up with dead phone.

This was previously no problems for the old Froyo N1.
Mar 5, 2011
Same problem with my N1. Now i'm charging phone twice a day...:( 
Waiting for the solution...
Mar 5, 2011
I received teh update on my N1 yesterday morning. After the long wait it was fantastic to  get it. It's without doubt making my phone much faster. But yes  it is draining the battery much faster. I charged my phone overnight and this morning in one hour it discharged 48% even though when I looked at battery usage it was only at 11%. Google needs to get this fixed asap as so many people rely on their phones for business. Prior to this I never had any problems with my N1 at all. Other than this the Gingerbread update is great especially teh keyboard. If Google doesn't get this right in the next week I am considering switching to the IPhone, and reluctantly as I like Android.
Mar 5, 2011
Same issue with me. Updated to 2.3.3 and now the battery drains overnight. For the past two days at work the phone has let me down about in the afternoon. What am I supposed to do Google, stand next to a fucking wall socket all day with the phone plugged in?! Surely, surely, the developers would check the performance of the phone with the new OS installed?

Google, you've got one month to sort this out or I'm getting a Blackberry!!!!
Mar 5, 2011
Same issue with me. Updated to 2.3.3 and now the battery drains overnight. For the past two days at work the phone has let me down about 3 o'clock in the afternoon. I'm out on site with no phone! What am I supposed to do Google, stand next to a fucking wall socket all day with the phone plugged in?! Surely, surely, the developers would have checked the performance of the phone with the new OS installed?

The whole Android experience is turning sour, in my opinion.

Google, you've got one month to sort this out or I'm getting a Blackberry!!!!
Mar 5, 2011
Always-on WiFi "fixes" most of the problems, by substituting it with a different problem - now WiFi is eating up the battery! Surely battery life could be even longer if WiFi could be disabled without Android OS having a heart attack?

The WiFi being turned on permanently also seems to have stopped the continuous GPS attempts that were occurring. I signed out of Latitude, but that didn't seem to be the source.

My guess is that something seems to be continuously collecting location data, and without the WiFi it was turning on the GPS, and that was eating up the battery. Now with WiFi permanently turned on, it is able to use the WiFi-assisted location. That's my provisional theory...
Mar 5, 2011
Same results here, seeing "Android OS" consuming up to 50% of battery usage, even after a factory restore.
Mar 5, 2011
#88 FatJoe79
Both "always on wifi" as well as "turning wifi off manually" work for me. The heavy battery drain only occurs in combination with the "wifi sleep while screen is off" policy.
Mar 5, 2011
Strange. My n1 with 2.3.3 works great.seems like this issue does not apply to all.mine uses actually less battery by increased performance . Also idle times 
Mar 5, 2011
I have 'never sleep' policy for WiFi, and battery life is just fine.
Phone easily can sustain a day with some 40% battery remaining.

It is the same, if not little better, then it was
with froyo.
Mar 5, 2011
No problem here after disabling Latitude.  Battery life is great.  I don't know if it has any effect, but my N1 is unlocked and rooted.
Mar 5, 2011
To all having this problem, this seems to be the same issue reported in froyo back in September! Thus far Google has yet to even acknowledge it!! I've been frustrated by it since getting my mytouch 4g. If it is in fact the same problem it is a huge Android bug and not device specific. I'll post more about it later when I have a spare minute. Until then check out this thread and be sure to star that issue as well:
Mar 5, 2011
If possible, can any of you please run Watchdog Lite from the Market (it's free and it is NOT an auto-task killer, something you do NOT want to have on your Froyo or > phone).

Configure Watchdog to 'Include phone processes' and see if /suspend comes up as the offending culprit.  The default monitoring is 'Medium' which looks for apps that consume CPU > 40%, which should be more than enough to expose the /suspend issue, if that is in fact it.

This has been happening to Froyo users (not all, only some - e.g. I can test one MyTouch 4G (HTC Glacier) for a month and it will never get the issue; I can then wipe the phone and put a different Google account on there and see the issue immediately; wipe and go back to the original Google account and still never see the issue).

Restarting the device immediately after taking it off the charger seems to help certain users, but /suspend can still come back up later in the day.

Apparent constants = HTC and Samsung devices, Froyo or greater
Mar 5, 2011
My experience is that the 2.3.3 release doubles my autonomy in comparaison to 2.2.x. My Nexus One last about 40h instead of 20h before.
Mar 5, 2011
Wow....switched to never let wi-fi sleep (go to wifi settings, then menu>advanced), and the difference is night and day. Had phone off charger for about 3 hours, and I'm at 92%. That would give me 37 hours on one charge....which is insanely different than dying after about 9 hours completely.
Mar 5, 2011
Had the same problem. I signed out of Latitude (which I wasn't using) and that fixed the problem. The 2.3.3 upgrade is otherwise very nice. Much nicer keyboard!
Mar 5, 2011
#97 xalimar
Setting wifi to never sleep fixed the problem for me as well.  Android OS went from 50% down to 3%.
Mar 5, 2011
Since the wifi switch seems to work so predictably and effectively so far,
would any one care to switch it back to how it was when Android OS was
acting up and see if by following the above instructions for Watchdog lite
the "suspend" process is the culprit? Those of us having that process run
rampant would be curious to know if there's any parallel we can draw to
hopefully narrow down why the Android OS (as shown in the battery use stats)
drains our battery so quickly with the phone on idol, as well. The symptoms
are almost identical, but so far we have found nothing consistent to remedy
the problem (not even the wifi switch) or to figure out why it starts in the
first place. Any help is appreciated!
Mar 5, 2011
I cannot keep juice in my phone now. Im killing aps, turning off wifi and gps, nothing running, phone dying. 
Mar 5, 2011
Have you tried running the watchdog lite app as suggested above?
Mar 5, 2011
I also had this problem. Turned wifi to 'never sleep', even though I rarely use wifi anyway. Getting great battery life now. Still looking forward to a patch anyhow.
Mar 5, 2011
Mar 5, 2011
Mar 5, 2011
I have this problem.  I turned wifi to 'never sleep' and it didn't help.  It says that the "Media" process, including DRM, Downloads, Media Storage, and Download Manager is CONSTANTLY using my 3G.  Wastes all my battery.

I didn't have this problem two days ago before I "upgraded" to Gingerbread.
Mar 5, 2011
With Gingerbread the battery life on my nexus one has plummeted.  Not even making it through a long day with very mild use without low battery warning.  Right now with almost no active use on a Saturday with 7hr 40min on the batter the Android OS is taking up 47% of the battery according to the settings>applications.  I don't remember the specifics but before gingerbread it was below 10%.  
Mar 5, 2011
Same issue here
Mar 5, 2011
I can confirm the battery life reduced significantly since I installed Gingerbread.

With my usage pattern my N1 could last 3 days on one charge. Day before yesterday I installed Gingerbread, and the battery went from 100% to 30% overnight (about 14 hours) without a single phone call, 1 sms sent, couple of GTalk messages.

My phone is configured like follows:
- 2G only
- wifi on
- bluetooth off
- gps off
- network location provider off
- display automatic

Wifi was scanning since there was nothing to connect to.

In Settings/Applications/Battery Use it says:

- Android OS - 70%
- Cell standby - 9%
- Phone idle - 9%
- Display - 6%
- akmd - 2%

This was the first time ever I had to look at what has been using battery, and this is very annoying.

Btw, Spare parts now crashes when I try to look into Battery history.

I am afraid I have to conclude Gingerbread makes N1 pretty useless. I am not sure I would like to wait for a patch, and wondering if it is possible to switch to previous version?

Mar 5, 2011
Android OS gobbling 52% of battery use.  Can't make it through the workday without a recharge.  Have removed Latitude and shut down wifi.  Still no change.
Mar 6, 2011
My problem is that Gmail is using over 50% of battery life.  Has anyone else seen this??
Mar 6, 2011
I'm currently in the middle of doing some testing at the moment. I'm pretty sure i've fixed the problem, but I don't exactly know for sure what the cause is.

Last night, I did the following:
- Did a factory restore, and chose not to restore any apps.
- Updated only the existing apps (Maps, Twitter, etc) via the Market Place
- I set the "Wi-Fi sleep policy" to Never
- Manually disabled WiFi
- Fully charged the phone over-night.

This morning I unplugged the phone, and now the battery is currently sitting on 79% after 10h45m with a day of minimal use (couple short calls, checking/sending a few emails, turned WiFi on for a bit). Yesterday, I barely got 14hrs after similar usage.

The most noticeable thing that has changed is the battery usage breakdown, in particular "Android OS" which has gone from 50% to 2%.

So, now i'll start re-installing my apps one by one and see if I can narrow it down.

Mar 6, 2011
Ok, so this weird.

A few hours ago (just after my last post), I signed into Twitter (for the first time since factory restoring). Did absolutely nothing else, just signed into Twitter. About an hour later I noticed the battery was draining much faster (the graph is very handy). I also noticed that just about everytime I looked at the screen, the little sync icon was in the task bar. At first I thought it was Twitter related, but it turns out it was the Google Calendar sync process for my companies calendar (Google Apps). Basically, it was failing, and constantly retrying. My personal calendar is sync'ing fine.

A bit of Googling, and i've found it's also an issues others are having:

I'm not sure if Twitter is somehow related or just a coincidence. Maybe by signing into Twitter, it somehow screwed with the calendar sync process...who knows. Doesn't make much sense at this stage.

I've now disabled sync'ing for that Calendar and will see if the battery drain rate starts to flatten out again...

Mar 6, 2011
Same problem here. How do I go back to the old version?
Mar 6, 2011
My wife and I both use the N1, and while my battery use seems to have improved greatly, she is experiencing the same rapid drain everyone else is reporting. Looking at the About Phone info, everything seems to be the same. The only difference is how we got there: My phone was previously rooted, and I went back to an Stock Froyo build before flashing all the updates, then signed in using my Google account (once Gingerbread was already on the phone). Not sure why that would make a difference, but it's the only difference between our phones. 
Mar 6, 2011
With Gingerbread, my N1 battery went from 100% to 30% in less than five hours without using the phone. Battery usage was as follows:

4h 41m 44s on battery

akmd:           42%
cell stand by:  26%
phone idle:     24%
mediaserver:    5% 
Android os:     4%

Phone settings:
2G only
wifi off
bluetooth off 
gps off
Mar 6, 2011
On my phone it was sufficient to:
(1)  Set the "Wi-Fi sleep policy" to Never and
(2) disable wireless manually
to work around the rapid battery drain problem.

Mar 6, 2011
The first day my battery went down faster than the average pants in an "america's funniest home video"!!

The days after, it lasted a bit longer, however I do not know if that was due to having the "skifta"-app running. That sucked a huge portion of my battery (I thought I closed the app, when I pressed "back", but apparantly you have to open menu and choose exit)
So after I closed Skifta my battery life went up, but still not as good as pre 2.3.3
And on the first day of 2.3.3. I didn't use Skifta, so that HUGE battery level dive, was not Skifta's fault.

My phone settings are usually, screen brightness to auto, gps always on, wifi only when I need it, like 5 times a day for 5-10 min, syncing is always on and bluetooth is almost always off.

I thought Gingerbread would increase my battery...whats going on?
Mar 6, 2011
Got the update a week or so ago. At first everything was ok. After a 2-3 days, I have noticed unusual battery drop, my N1, was 72% and died within 3 hours when I was at work... So, I have removed spare parts thinking it might be incompatible with 2.3, To no avail, last night I charged my N1 and left it on the table, not touching it. Guess what? Died after 23h hours, Android OS 76% over 5h of CPU time. On Froyo, it would last up to 5 days. 
Damn Google, I'm fed up with the battery drain issues. I had them in 2.1, and 2.2 fixed them, and now 2.3 brings these again...

I'm not rooted, is there a way back to Froyo?
Mar 6, 2011
same problem for me… 
Mar 6, 2011
Checking what's running and draining battery, Android OS comes up at a whopping 54% !!! After installing Gingerbread, I can barely get through one day. Sure the interface is prettier than Froyo, but performance is disgusting! How can I ditch this upgrade and go back to Froyo?
Mar 6, 2011
How can I dump Gingerbread and reinstall Froyo - thereby regaining the use of my phone - and my work life? 
This is the worst tech experience I've had and it's having a negative impact. Why can't these people test before release? I'd rather pay for an upgrade and know I've something better and more efficient than the old system.
Mar 6, 2011
The Android OS is using a stunning 66% of the battery which is making the phone almost unusable if I am out and about. 
Mar 6, 2011
Further to my post above. After disabling Calendar sync'ing for the offending account, battery consumption went back to a more gradual rate.

You can see from the attached, the "cliff" is where I signed into Twitter, and then later noticed Calendar was constantly trying to sync. The bottom of the cliff is where I disabled calendar sync'ing. The slight "downhill" part at the end is my commute to work (checking email, etc)

So, this morning, I tried the following:
- Cleared the cache for both the Calendar and Calendar Storage apps.
- Re-enabled Calendar sync

So far, the calendar appears to be sync'ing normally and the "cliff" hasn't reappeared. 

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Mar 6, 2011
My battery usage on my Nexus One was terrible after upgrading to 2.3.3, with the Android OS being the primary battery consumer.  The  "turn wifi off when screen is off" workaround seems to work, and battery usage is back to normal, maybe even better than with Froyo.
Mar 6, 2011
Google changed the way apps can play with some of the phone settings, particularly the antenna on/off stuff.  

There's another Issue # that pertains directly to the inability to turn off the 3g while the screen is off, which is was most decent battery saving apps did, as well as the Always On Mobile setting from HTC phones.  Gingerbread does not have that ability right now.
Mar 6, 2011
My N1 received gingerbread on 2 or 3 March. The kernel s android-build@apa28 #1  (noticed it was a bit later than one reported above).

Yes, I have also noticed faster battery drain, though not extreme as others have reported. But I notice the display sometimes becomes quite bright - as if the ambient light sensor has become confused. Anyway, if we want to quantify the problem, we need to report something other than hours and percentages. I'm going to give that watchdog a try, but I'll try the "monitor" mode on my old "System Manager" first.  
Mar 6, 2011
Same issue here - after update to 2.3.3 the battery was drained overnight for 8 hours to 0 ! Now I changed the wifi policy from "When screen off" to "Never" and switch off Latitude and the battery is normal - 4% for 8 hours with Wifi switched on. I think there might be a difference in the Wifi chipset in different releases of N1, but not sure.
Mar 7, 2011
Same problem here, did a lot of tests with different settings, pretty sure the problem occur while wifi on. With wifi off, I left my N1 idle for 2hrs, it only consume 1-2% batt, and Android OS consumed only about 3%. However, with wifi on (with different wifi sleep policy), batt drop more than 8% for 2 hrs, OS takes up 50% (>50min usage / 2hr), and according to WIFI and Awake record in batt graph, seems the phone constantly "awake" even it was idle. I also found that the problem occur either wifi network is available or not. The above observation was done with 3G off, I have tried 3G on WIFI off, no batt drain problem found.
Mar 7, 2011
Continuing on from my last post; as well as experiencing the issue people are having here (with "Android OS" consuming 40-50% of the battery), it looks like the constantly sync'ing calender issue I mentioned above is *another* battery draining issue others are having, see here:

At this stage i'm thinking it was purely coincidence, and support the theory that this issue is somehow related to WiFi and/or the WiFi policy manager.
Mar 7, 2011
#129 paulstuartroberts
I think the solution might be to wipe the cache using recovery mode.  I've struggled with poor battery life since the update, with Android OS always running at between 20 and 50% CPU usage.  I cleared the cache yesterday and immediately the CPU usage by the OS dropped to between 3 and 7%.

To wipe the cache:
-hold down trackball whilst turning on phone and wait for recovery menu.
-select "recovery mode" from the menu.
-when the android on the skateboard pops up press volume up and the power button together to get the recovery menu.
-select "wipe cache".

It takes a couple of seconds and you do not lose any data - all apps, settings, data will remain untouched.

If the issue lies with the OS cache, this explains why some are experiencing battery life problems and some are not.
Mar 7, 2011
Same problem.
No services running (GPS, WiFi, Maps, Lattitude, Skype, Mail/Sync etc) and it's a real problem just to keep the from not dying. Charging is very sloow.

Fix this now or I must revert to Froyo or root the phone and start using a working ROM.


Mar 7, 2011
I did these changes:
1) Turn off localization wireless/gps
2) Change wifi sleep policy
3a) Turn on 3G data only when I really need it
3b) Use only 2G and switch to 3G only when I really need it

I don't know which was the right choice, but now my battery life is similar to Froyo.

This is a patch, not a fix, I hope a fast fix from Google!
Mar 7, 2011
I too have noticed a huge battery drain since the GB 2.3.3 update. I was experiencing high use by Android OS just like others. I turned Wi-Fi off mid day yesterday but it didn't really seem to help. Last night I left phone charging overnight. This morning Android OS is very low % of battery. Android System battery use has re appeared and is low too. The strange thing is Display is showing 70%. Its set as low as I can set it and still see. Is that right?  
Mar 7, 2011
(#109) >> My problem is that Gmail is using over 50% of battery life.  Has anyone else seen this??

Mar 7, 2011
Same problem for me. I tried setting "2G only" and that didn't seem to help.

I then tried changing wifi sleep policy to "Never" and it looks like that has probably cured my problems - at the moment it has been on battery for 26 hours and the battery is still only at 43%.
Previously my wifi was set to "never when plugged in" and I can confirm (from checking my router) that the wifi was sleeping as expected with this mode.
Mar 7, 2011
Me too after updating my battery life drain v fast and androidprocess takes up 40% of my battery life..

Mar 7, 2011
My battery is also draining much quicker since the Gingerbread update. I never have wifi on, so that isn't the problem. My phone gets light use and I was able to sometimes go 3 days between charges with Froyo. Now I need to charge it at least once a day. I keep my display on auto brightness.

Battery use settings say:
Cell Standby 34%
Phone Idle 31%
Display 28%
Android OS 4%
Mar 7, 2011
Same over here in Belgium. Since the update I have to charge every day where before I did charge once a week.
Battery use gives Android OS 40 %.
Mar 7, 2011
Turning the wifi to 'always on' and then manually turning wifi on and off seems to have imroved the situation somewhat - but still no where near as good as Froyo.

On another note: my breakdown of battery usage seems to be different to what people are reporting here, see below. Display is taking up 61% - is  this normal?

Display - 61%
Wifi - 11%
Mobile Standby - 9%
Phone Idle - 7%
Browser - 7%
Androis system - 4%
Android OS - 3%
Mar 7, 2011
Edit: Display has now gone up to 74%
Mar 7, 2011
Using Watchdog Lite, I can confirm that /suspend seems to be the offender on my Nexus One. I have my WiFi sleep policy set to "When screen turns off", and I see the Android OS as the primary battery drain when my phone is otherwise idle. Battery life is shortened by maybe 40-60%
Mar 7, 2011
I got the Nexus S in December and noticed that "Android OS" used an unexpectedly large amount of battery compared with my Nexus One.  

I recently had to send the Nexus S in for repair, so switched back to the Nexus One.  During this time I got the 2.3.3 update and noticed the same behaviour started occurring and a significant decrease in battery life (down to ~15 hours from ~20 during normal usage).

Mar 7, 2011
after the gingerbread update, the battery usage for the Android OS went up to 66%!  i can't go a full day without the battery draining out on this thing!
Mar 7, 2011
It's been happening to me too. My battery was at 60% last night, and when I woke up this morning, it was dead and my alarm had not gone off. 

According to battery usage, it claims that Android OS is the primary offender (at 40%).  
Mar 7, 2011
I have the same problem.
Mar 7, 2011
I currently have an "Android OS" use of 41%.
This is waay above the "Android OS" use on Froyo. My Nexus One now needs to be recharged during the day to be usable. 

Android 2.3.3, Baseband, kernel android-build@apa28 #1, Build GRI40 on a Nexus One.
Mar 7, 2011
Just my 2 cents worth. I also have noticed that my Nexus One will have discharged in half a day. Over night it fully discharged its self and turned off from a full charge. There is a battery issue that needs addressing. I'm now charging the phone twice a day instead of the once with Froyo.
Mar 7, 2011

Wiping the cache FIXED my problem. I was getting 50 - 60% Android OS use when my phone was off, now it's back to where it was prior to the 2.3.3 update.

Thanks for the suggestion! :)

Now if I can EVER get my freaking trak-ball to change color, instead of just flashing white, I'd be one happy mofo.
Mar 7, 2011
OK, i think its fair to say there is definitely a problem with 2.3.3 on the Nexus One .... my question is .... Can we get some official response from Google on this please!

Why are we left in the dark?
Mar 7, 2011
I have the problem too. I also see processes running by themselves while the phone is in standby, Rate Places (2 instances), market, twitter. I kill them and put the phone asleep and a while later I find them running again. 
I'm about to switch my sim to a Motorola phone that won't drain the battery dead. Google wake up and fix your problems!
Mar 7, 2011
@paulstuartroberts - when I choose "recovery" it starts to boot and then I get an android with a exclamation-in-a-triangle symbol over his head and it stops booting.
Mar 7, 2011

You're almost there. As soon as you see the exclamation mark, then press and hold the up volume + power button.
Mar 7, 2011
My HTC Desire , is like a big shit, The batery go off 80% 3hours, Android repair that , please, to The people i said dont pay 4 android 
Mar 8, 2011
@stephen: are you confusing that with the step after booting where you hold vol-up+power to get the recovery menu? I do that I choose "recovery" and get the exclamation. vol-up+power there doesn't do anything. Here's what I'm doing:

1. boot while holding trackball - it boots to a menu
2. when menu comes up, hit volume-up+power to get to recovery menu
3. Choose 'recovery'
4. it boots to exclamation (no menu, just exclamation point and android logo)
Mar 8, 2011
Mobile: Nexus One
When I quit an app with full-screen and landscape mode, the menu page will become flashing and un-control-able. 
When I am using ddms.bat to trace the problem, I found that when I quit the app, system run SurfaceChanged in RenderScript_ini 3-4times. Normally, this status should be called once after surfaceCreated. I think it is the causes of the problem.
Mar 8, 2011
Battery drain doesn't make any sense from an update which clearly states it was built to provide better battery consumption.

When on charge in the dock, my battery still can drop to 96% for no reason!

This and the keyboard bug need to be fixed or give me an OTA back to 2.2!!!
Mar 8, 2011
I had been having problems where the status was showing as awake for long periods of time. After trying a few things I switched from the default live wallpaper to a static wallpaper overnight and the awake state was intermittent. I went back to a live wallpaper this morning and since then the awake state has been constant.

I have switched back to a static wallpaper now, but do those suffering from the poor battery performance have live wallpaper? 
Mar 8, 2011
Wiping cache didn't work for me
Running Watchguard lite now, left Wifi to switch off after screen off.
Mar 8, 2011
I'm having the same issue with N1 updated to 2.3.3.
Normally I put the phone in Aricraft mode over night and this drops the battery usage down to about 3% in 8 hours. Last night I forgot to do that and it consumed more than 30%. It really looks like that the WiFi consumes much more when the screen is off...
Now I tried wiping the cache as suggested above and I unset notification for open wireless (It's just a try but maybe the wifi stay on and keeps scanning for open wifi...). I've left the wifi policy to "off when screen off" just to see what happen. I'll post my result here in few hours
Mar 8, 2011
Battery of my N1 goes much worse after it was upgraded to 2.3.3. The WiFi Sleep Policy seems not working correctly. I set it to Sleep "when screen turns off", then I keep pinging it from another computer on the same LAN. Well, I can always get the ping response. It made the phone unusable. Battery life cannot last longer than 12 hours for me. I can even see the percentage of the battery gauge getting lower and lower in a few minutes.
Mar 8, 2011
I called HTC on my battery life (it has died on me overnight - not being used - 4 times now). The HTC rep recommended a free app on the market called Juice Defender. It is not fully compatible with Gingerbread system, but I can see it does have some control over syncing, I can see in the log that it has entries "Autocync forced". 
He said that 8-9 hours on a charge for the Nexus One is normal. 
Mar 8, 2011
I manually switched wifi off and put the screen off for one hour. Battery consumption dropped down to 1%.

1) I re-enabled the wifi (policy is "off when screen off"), switched screen off and tried to ping my phone: no answer - good

2) I switched the screen on, tried to ping: answer - still good

3) Swithched the screen off again, waited few minutes, and tried pinging again: answer... NOT GOOD!

This is the evidence that WiFi is actually not switched off when the screen is off.
So for the time being I'll control wifi status manually waiting and hoping that Google will come to as soon!
Mar 8, 2011
phone is almost useless after the update. Not happy.
Mar 8, 2011
Yep, same issue. Android OS is showing as biggest power consumer (60%).
Nexus one with OTA Gingerbread 2.3.3. Build GRI40, minimal apps.

Google please fix.
Mar 8, 2011
Mathers fukers, The batery of my HTC Desire go off after 5hours only on, etupid bastard repair it now
Mar 8, 2011
having same problem since the OTA update..... battery life down significantly and battery usage shows "Android OS" using well over 50%, pushing the screen usage into a distant second place. 

Changed Wi-Fi to never sleep (also had it set at the default off when screen off) and things seems to be getting back to normal with Android OS once again down in the low-single-digit range for battery consumption. 

The only other odd change has been the Google Maps always seems to be running. I have never signed up for Latitude, so that's not the problem, but every time I look at running apps, Maps is listed there despite the fact I have not used it and despite having force stopped it hours earlier. Anyone know what's up with that? Could it be part of the problem?
Mar 8, 2011
Same problem here. Right now Android OS has 63% on the Battery Use. Since the update I can't use my phone w/o charging twice a day. If I can't get this fixed or downgrade to Froyo I am going to buy another phone. How many people need to complain in order to Google fix it??? 
Mar 8, 2011
Same problem here too, Android OS using 41%.  Phone used to last 3 days on Edge and no WiFi, I get roughly 24 hours on the same.  Something needs to be fixed or a downgrade option needs to be presented.
Mar 8, 2011

Again, you're almost there. I'm not confused, I know exactly what step you are at:

Here is how I do it on my Nexus One, and it works every time:
1. Power off the phone

2. While holding the Vol Down button, press the power button to enter the HBOOT menu. Wait a few seconds for HBOOT to scan your SD card (you'll see some green writing flash over the screen)

3. Using the Vol buttons, select Recovery, then press the power button.

4. The phone will reboot to a screen showing a little green Android and an exclamation mark inside a triangle.

5. Press and hold the Vol Up + Power buttons together for a few a second. You should now see the Android system recovery menu in blue writing. If you don't, repeat pressing the Vol Up + Power buttons (sometimes it take a few goes).

6. Select Wipe cache partition using the scroll ball.

If the above doesn't work for you, then I guess it's possible you have a different version of HBOOT and/or the recovery system (I know little about these areas).

I have no idea if clearing the cache has any bearing on the problem discussed here, but the above instructions are for clearing the cache partition.


Mar 8, 2011
I found the same problem here when WiFi is switched on the battery consumption is 2-3 times higher after upgraded!
Mar 8, 2011
The past couple days I have seen a noticeable improvement after changing the WiFi sleep policy to Never (even leaving WiFi manually switched on).

This morning after I took my N1 off charge, I changed the WiFi policy back to "When screen turns off".

Now, after 6 hours and similar usage pattern, battery consumption rate has gone up again, and "Android OS" is the leading consumer at 25%, with Display at 24%. Android OS usually consumers 2-3%.

There is definitely something not right with WiFi and/or the WiFi Policy Manager.

### Google, what other information do you need to get this fixed ASAP?? ###
Mar 8, 2011
I have been experiencing noticeably decreased battery life on my Nexxus One since upgrading to Gingerbread. Please fix this! I can barely get through the day witout charging. 25% of battery life used while phone is idle. 
Mar 9, 2011
Since changing wifi settings to never sleep I have lost only about 1% per hour of battery juice with light use all day (short call, half dozen texts, about 10 mins playing with phone), which is pretty good (see comment 165 above for my original post).

But battery life could still be better! Battery status now shows WiFi has consumed 29% compared to 28% by the display (and 2% for Android OS). So if that darn wifi sleep policy worked properly, the battery life would be even better!

C'mon Google... how many people need to join this thread before we get even a simple acknowledgment from you that it's a bug you're looking in to?
Mar 9, 2011
#173 FatJoe79
@127: at first I was assuming the same as you. After thinking a bit more about it, I came to the conclusion that this is the maximum of what we can get out of the battery. Even if the wifi now is at 25%... when I am switching off wifi for an entire day, I don't get a significant 25% battery boost. My explanation is that now — instead of the wifi —the mobile data is consuming much of the 25%.
Mar 9, 2011
Wiping my cache as described by @129 by paulstuartroberts, did not solve my power issue :(
Thanks for the suggestion. It seems to work for some people, e.g. @147, but not for others, e.g. @157.

My guess is we are seeing different issues resulting in the same symptoms.
Mar 9, 2011
I can confirm that the WiFi always on policy worked for me. I've also tried signing out of Latitude, and getting rid of my Places widget, but this did not help the issue. 

@98 I've tried installing Watchdog lite and switched the WiFi policy back to off, when screen is off, and I can confirm that every five miuntes or so, the suspend process peaks at around 25% CPU. It does rise above 30%, but not that often. However, 25% CPU every five minutes could be a major battery drain in the long run.

@127 I'll test wiping the OS cache later. Thanks for the tip.
Mar 9, 2011
I've used watchdog as described by comment 93, and I confirm that "suspend" pops up in the alerts.
Mar 9, 2011
This is a high priority issue, my Nexus one is now unusable.  Is it possible to regress to previous OS?
Mar 9, 2011
Same problem here. Battery drained from 40% to 0% overnight on stand by. Proof of that here

I think there's a problem with wifi sleep policy.

Google please fix this ASAP!!!
Mar 9, 2011
Here is another update:
I did a factory reset from recovery mode.
Then I only restored my gmail account and left the others behind (facebook twitter etc).
I removed the youtube widget and the rest is how it appears after a factory reset.
My wifi policy is still "suspend when screen is off" (or something like this).
Auto synch mode is on, WiFi is on.
I switched the screen off and left the phone there for one hour and half and the battery consumption is now normal (2-3%).
Unlikely before, when I switched my screen on, the wifi icon in the notification area was not there and it appeared after few seconds when the wifi wakeup (correct).
Comparing to my previous configuration (before wiping data) suspects are:

1) Factory resect is actually needed after updating to 2.3.3
2) Any of the Facebook, Twitter, Skype accounts
3) Google calendar widget (before I added to the screen, now is not there).

I'm going to try adding those items one by one and see if and when the problem will be back again.

BTW, so far if you do a factory reset and then you only setup a gmail account and remove the youtube widget from the screen and left all the rest as default, the battery problem should not appear.
Mar 9, 2011
!!This should be a high priority issue, my Nexus one is now unusable!!

Same problem here. Battery drained from 55% to 0% in one (1) night while just laying on my nightstand. I always have my WiFi on and after the Gingerbread update my phone won't last a day anymore. I used to be able to get 2 maybe 3 days out of it.

I'm going to try the above mentioned workarounds of manually managing my WiFi and clearing my cache. Hope it helps a bit.

In the mean time, Google please fix this ASAP!!!
Mar 9, 2011
Some screenshot evidence.

After light use of the phone, I left it on my nightstand overnight, and it was dead in the morning. I plugged it into USB and captured these screenshots.

Never had this issue with previous version.
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Mar 9, 2011
Shit's weak!
Mar 9, 2011
Nexus one now lasts 3 hours (max) from a full charge. Unusable!

Model Number: Nexus One
Android version: 2.3.3
Baseband version:
Kernel version: android-build@apa28 #1
Build number: GRI40
Mar 9, 2011
I had the same issue of battery drain; fully charged, went to bed at 1 a.m., after 6 hours, the battery was at 45%.  Shocking.  But did a reset, uninstalled a few of the unused apps; it seems to work fine since.  The screen calibration continues at random, but putting in sleep mode and on again resolved it (annoying.)
Mar 9, 2011
Mine was lasting 12 hours after the update (with some lightish use) - down from 2 days. I forced WiFi to always on (rather than on when plugged in) and now i just got 2.5 days from it! yay!
I spend much of my time in a WiFi zone. I wonder what will happen if i am not - the upcoming weekend will tell.
Mar 9, 2011
Same issue as others report regarding extensive battery use by Android OS: 44% and CPU usage of 2:29:13 of the 14 hours on battery. Gingerbread on my N1 is a downgrade :(

By contrast, my wife's N1 is showing normal battery use with gingerbread. Odd. 
Mar 9, 2011
Share what I just found yesterday:

My environment: 
Wifi Sleep Policy: Never when plugin
APNdroid is installed to switch on/off the mobile data service

If APNdroid off the mobile data
Wifi lives forever, even when the screen shuts off (ping through LAN always responds)

If APNdroid on the mobile data
Phone uses only 2G networks, Data enabled. So it is GPRS only. (3G takes also a lot of battery)
Wifi is off a few minutes after screen shuts off (no ping response)

I wonder if there is someone else sees what I experienced or it was just a coincidence?

Mar 10, 2011
#188 FatJoe79
Your wifi sleep policy is causing it.
Mar 10, 2011
Just want to add that I have the same battery problem after upgrade to Gingerbread...
Mar 10, 2011
Same problem after Gingerbread upgrade
Mar 10, 2011
The following did nothing for me:
Cache wipe.
WiFi sleep options.
WiFi off.
Sync off.

I did the manual update ( from sd card). 
It has been getting noticeably worse since I updated however I feel as if the problem didnt start immediately after updating, rather a few days after. Perhaps there is some application we use that others don't which initiates this problem.
It doesn't matter what gets uninstalled/stopped etc.
Mar 10, 2011
#192 amikula
My battery got noticeably worse the day after getting the Gingerbread update. Clearing the cache didn't help, nor did turning off Latitude. Today I'm trying turning WiFi sleep option to "never" to see how that works out.

Here's the info from my boot screen (power off, then turn on with "page down" pressed):

Oct 12 2010,14:33:16

...not sure what that last line means? Firmware version? I purchased the phone online for T-Mobile network within a month of the original announcement, so I've had it since January 2010.
Mar 10, 2011
Same problem here (nexus one, gingerbread, AT&T). I did the OS cache wipe and it worked for a day but the problem is back. Trying the 'wifi always on' sleep policy, but this is a temporary fix IMO. We need a solution Google!

also: My brother has a nexus one with gingerbread, same issue.
Mar 10, 2011
Please fix this NOW. My battery has died before 4:00 PM everyday since the Gingerbread upgrade. I work in politics and feel handicapped in my profession without having a working phone!   
Mar 10, 2011
I'm having HUGE battery problems with my Nexus one since the gingerbread update as well. The services I keep on are wifi, gps, sync, and medium brightness (the same settings I used in froyo). Further, I noticed this issue before hearing about it -- there's a legitimate concern. We just need to nail down the precise cause.
Mar 11, 2011
In my Nexus One I have found that "" is eating the battery.

Go to settings/application/manage applications/all, click on "media storage", and then "clear data".

It works for me.
Mar 11, 2011
Same problem again - battery life has gone from 3-4 days to 24 hours since updating my Nexus One to Gingerbread.

The battery use for the OS is reading between 45% and 75% at all times. No additional apps are running apart from settings etc.

WiFi is on, but 3G and GPS are always off. I use the lowest screen brightness. These are the same settings I used with Froyo and got 4 days battery life regularly.

Mar 11, 2011
#198 amikula
Settng WiFi sleep policy to "never" fixed my problem!

Home->Menu->Settings->Wireless & Networks->Wi-Fi Settings->Menu->Advanced->Wi-Fi sleep policy->Never

Android OS was always the #1 consumer of battery, now it's way down. Wi-Fi is sometimes the top consumer, so it would be sweet to see this fixed, but my battery consumption is waaaaay better. Not sure if it's as good as pre-gingerbread, but it's workable.
Mar 11, 2011
Having exactly same problem here. The battery on my N1 lasted about 1.5/2 days with Froyo 2.2, now with Gingerbread 2.3 it lasts less than a day.
Mar 11, 2011
Hope this gets fixed soon. Without any activity on phone, by evening, it drops to near zero.
Mar 12, 2011
Battery life was pretty decent until gingerbread. 
Now I have dead battery in about 16 hours with Android OS using up to 75% battery.

Please fix soon!
Mar 12, 2011
The cache clearing option has been able to get me up to about a day and a half with minimal use, but I used to go 2.5 days most of the time.
Mar 12, 2011
Same problem, when I go to sleep midnight the Nexus on Gingerbread never makes it to the morning. (8am). This was not problem before update and at morning there would be at least 50% of battery left. Android OS takes 40% of battery.
Mar 12, 2011
Same problem, System stand by and Phone idle using up more battery than my screen! From a full charge, if I leave my phone unplugged its 100% dead in ten hours IF I DONT USE IT AT ALL?!

Wifi = off
GPS = Off
Screen = auto
Gingerbread = flashed and stock
Latitude = off
Sync = on (default settings syncing one account)
Mar 13, 2011

Hi all,

My phone has been doing exactly the same and using its battery really fast (greater than 60% Android OS battery usage!) since i upgraded to 2.3.3. This morning however, for some reason my phone wouldn't connect to my wifi router so I 'forgot' the settings for it and reconnected and all was fine. I have just checked now, 6 hours later, and my battery usage graph is flat and Android OS is using 2% of the battery! I am a happy man!

So, I suggest people try 'forgetting' all their wifi settings and see if that cures the problem for then.

Mar 13, 2011
can't make it though the day with wifi off all apps running in bg turned off.
this isn't funny... I'm starting to regret my iphone.
Mar 14, 2011
I had the same power draining issue. Please fix this. I noticed that sign out of Google Latitude helps to ease the situation.
Mar 14, 2011
Well the cache clearing seemed to help for a little, but now I'm back to a day (or less).  I tried forgetting wireless networks too, that's no help.
Mar 14, 2011
Same issue.  

Cleared the cache, set the wifi sleep to 'never' and the problem seems fixed.  Ran like that for a couple days then set the wifi sleep back to 'sleep on screen off' and the problem came back so that certainly seems to be the culprit.

Battery use is ok with wifi sleep-never, but obviously I would prefer a real fix.
Mar 14, 2011
Much reduced battery life on my Nexus One. How can I go back to the old version? 
Mar 14, 2011
Also having this problem. Turning off Wifi seems to fix it. But I shouldn't have to. 

The speed with which Google fixes this problem will determine if I buy another Android phone or not. 
Mar 15, 2011
I noticed a huge decrease in battery life after switching to Gingerbread.  The death buzz woke me up this morning as I did't charge the phone over night.  I used to go several days on a charge.  Battery indicator says 63% OS usage after 22 hours.  I will try the wifi always on trick as my wifi is only at 2% after 22 hours.  Can I roll back the OS?  Is there any reason not to?
Mar 15, 2011
I have the same problem on my N1 since upgrade to Gingerbread.  Before I could go two days with little use before charging.  Now it cannot make it through a day.  I have just set my wifi sleep settings to never.  I will report back if that helps.  However, even if it helps, this is not an ideal solution. The problem should be fixed.
Mar 15, 2011
Phoe just asked to be connected to the charger... I leave it plugged in overnight and have barely used it today.  It's been like this since 2.3.3 was installed.  I've been a mostly happy pioneer Nexus One customer so far, but this is ridiculous. Please fix this or put us back on Froyo.
Mar 15, 2011
Same problem with my N1 too. Reverted back to FRG84G (2.2.2). I'm not taking any chance with GRI40 (2.3.3) that riddled with bugs, battery life, Exchange email, light sensor for auto brightness, etc, just to name a few critical bugs.

What I need is stable N1. I'll forgo 'nice' Gingerbread for now. No point of having nice UI but unstable OS. 

I'll wait.
Mar 16, 2011

I'm the developer of SystemPanel, which includes a capability to log CPU usage by process and compare it to battery level over time.  I've noticed an anomaly with the Nexus One which appears to be in line with what is being described here, and have a few log files and battery usage plots which might help.

I've now seen the issue twice today.  The first thing that happens is the phone is disconnected from its wifi network (i.e., it loses its connection).  This is not an uncommon occurrence with all the test phones, and is probably made worse by the fact that there might be half a dozen phones connected to this consumer-grade Wi-Fi network at any given time.

At this point the overall device CPU consumption spikes to around ~40%, with the "suspend" process using the lion's share of it at ~30% (see Suspend.png screenshot).  The "system" process used about ~5% during this time.  Several other applications which were simply running in the background each used a sustained ~1%.  These applications included Maps, Dialer, Status Bar, and SystemPanel itself.   

Either turning the device on or plugging in the USB cable "corrected" the issue.

The attached screenshot shows the CPU usage of the "suspend" process.  You can see that the first event occurs at about 10:00 and ends at 14:20.  The second event begins at 22:00 and ends at 23:30.  The "Process CPU Activity" graph is showing consumption for a specific process, in this case the "suspend" process.  The "Charging" display is green when the USB cable was plugged in.  The "Device Usage" plot is simply showing time when the screen was turned on (it was OFF during these events).  

The gap in the data at 17:00 was due to the SystemPanel service being stopped for a period of time, not related to this issue.

The data in these plots is calculated every 5 minutes.  At each such 5-minute interval SystemPanel is scanning the /proc filesystem to determine the number of CPU "jiffies" which have been consumed by each process since the previous scan.

Attached in "FirstFail.txt" is a logcat showing times which events occurred.  The SystemPanel entries are irrelevant, it's simply the background logging service polling every 5 minutes and writing to its database every 20.   9:57 is when things go awry.  The phone had been sitting unplugged since 5:00.  The issue terminated when I began using the phone at 14:20, but there's not much of interest in the log after 9:57.

I've also attached a second screenshot, "7-day-log.png" which shows the issue has actually been occurring throughout the week.  The 7-day-log.png file is also showing the "suspend" process' CPU consumption.

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Mar 16, 2011
I found that for me it was definitely the Facebook which wasn't sleeping properly. I noticed whenever I received a notification, my battery would just get nailed even after I acknowledged and closed the notification. Hence I disabled all Facebook notifications and did a reboot (important!) and the battery issue is now fine. I have also started leaving GPS on which surprisingly doesn't seem to drain the battery much. This may also be reducing the use of wifi for location finding.
Mar 16, 2011
Scrub that last comment re: Facebook. I just toggled my wifi sleep policy, and the battery is draining fast again...
Mar 16, 2011
After the Gingerbread update, my N1's power button stopped working at all, that means l can't turn my phone on/off anymore, the original launcher is too buggy and keeps on "force close" and the baterry don't exist anymore, it's like a need to keep my nexus one connect to the charger all day . l'm from Brasil and there's no HTC store in here, but l thought it would be ok 'cause l really trusted HTC and Google, but , l'm really disappointed with both now, and l'm also really sorry that l didn't bought an Iphone4 . Now l'm stuck with a really expensive phone that doesn't works. Please Google, give us an update for that, 'cause my phone isn't even 5 months old, and l expected that it would last longer. l have no conditions to send my phone to the USA to HTC exchange it. Google took so much time to give away 2.3 update, and now it doesn't work ? Google do something about it ! Fast, please !
Mar 16, 2011
I use the N1, And how come my battery only last about 7 hours with MINIMAL use! only few looks on the clock, ones in a while. Is it something with my battery or? also, i have the display on the lowest brightness and it still consumes 70%.. On froyo battery lasted about 11 hours with MINIMAL use also. I have been frustrated with this for some time, but unsure if i should buy a new battery. I can see that some of you guys' phones last for over 14 hours with low display % usage.. Just to clarify my settings: Wifi: ON (Sleep: Never), GPS & Wifi location: OFF, Display: LOW, Background data: OFF, Bluetooth: OFF.. 
help me out!

Mar 16, 2011
Sorry I'm late to the party.  Same issues for me.  Battery life went to hell when I did the Gingerbread update.  I disabled all sync today and no help at all.  It appears to be regular idle time that's killing the device.  I had wireless off all day, no sync, no help.  I have a Nexus One 'holiday' phone (ex-Google employee).  I'm getting 11 hours of battery life in this configuration.  I run advance task killer and regularly check what could be causing this. No answers so far, and growing frustrated with the update.
Mar 16, 2011
I can see a clear difference on the battery utilisation graph with the wi-fi sleep policy set to "when screen turns off" or "never when plugged in" compared to "never". The changes in negative slope on the graph correlate exactly to changes of this setting and when set to "never" the battery drain appears to be reduced by 75%.
Mar 17, 2011
I tried leaving wifi on when screen is off and the OS quit using all the battery.  However, the wifi used 33% with the phone dark all night.  I would like that extra 50% battery life so I tried the forget all wifi connections trick.  That worked as long as I was at home where there was a wifi connection.  When I went out and was no longer in range of my wifi, the OS usage went back up so this is not a solution.  I have now tried turning wifi off completely when not in use and that puts "cell standby" up as the top usage.  This is what I want.  This is a minor bother compared to having the phone wake me up in the middle of the night when it does its little shut down dance but is not a long term solution. I will continue to do more testing.
Mar 17, 2011
Updated to 2.3.3  from (not OTA). Now my N1 is draining batt like mad. Phone idle reaches ~40%. Leaving it overnight just kills the phone. Hey Google, do something about it. 2.3.3 is indeed crap 
Mar 17, 2011
I hate to say it, but I was forced now to switch to Samsung Wave. Nexus has rendered to be unusable. My battery goes from 100 to 0 in less than a day now. Without any usage!

Wave can hold on one charge over a week. Makes you wonder, huh?
Mar 17, 2011
I have now, as an experiment, run my Nexus one with 2.3.3 with wifi turned off for one whole day, and the battery life was approximately the same as with Froyo. 'Android OS' use is ~2%

Today I have run my Nexus one with 2.3.3 with wifi turned on for 2 hours and 'Android OS' use is ~40%, consistent with the power draw I have seen other days with wifi on.

No reboot or changes to installed apps/setting etc

I believe the problem I'm seeing has something to do with Gingerbread's wifi handling while suspended.
A change from Froyo 2.2.1 to Gingerbread 2.3.3 must have been introduced that causes this, compared to Froyo, excessive battery use.
Mar 17, 2011
Hola después de la actualización, el teléfono la bateria solo dura 12 horas, por favor solucionen el problema 
hello after update 2.3.3 the nexus one device, the baterry die at in 12 hours, ,please fix the problem quick, and please 
put the app radio to use whitout wifi
Mar 17, 2011
SOLUTION (and other attempts)
*(After Gingerbread "upgrade") Phone dead less than a day.
*(WiFi on always) Better but not great
*(Forget all WiFi networks) Doesn't work when leave the area of the network
*(Turn WiFi off manually when not in use)  9 hours standby and only 7% battery used.  This is how it should be.
I installed a widget "WiFi Onoff" and it is not really a problem to turn it off and on.
It would be nice if Google would make the phone do this automatically like it should.
Mar 17, 2011
similar probs here with  2.3.3.  Phone was fully charged at 10am today, Now 4 hours later the battery is down to 68% and I've only made 1 3 minute call.   display of 
battery use says display - 35%, cell standby 25%, voice calls 16% (2 5 minute calls via blue in my car), blue tooth 14%, phone idle 9%, android OS 2%.   I didn't run wi-fi or gps at all.    

Overall, much worse battery life, similar to what others have reported.  after about
6 hours of no use it runs out of battery life.  Now I need to carry a car and desktop
charger to work.  

previous OS was much better!
Mar 17, 2011
My N1 is now basically useless as my battery will be dead after about 8 hours off the charger... and thats with only a few texts and email checks. Idle is at 37%, and standby is at 20% with 0min of no signal.
Mar 18, 2011
I have the same problem with my N1. Since the 2.3.3 update the battery is completely drained after 8 hours off the charger. Which did not happen with previous versions of the OS.

In the usage statistics of the battery "Android OS" uses more than 40% at the end of the day.

And I have not changed my daily use.

Need a quick update!
Mar 18, 2011
same issue. found out that the system was draining 43% of my battery in a 6h span. that is unacceptable. I have reset my wifi and turned it to always on to see if it will fix. The battery was bad to begin with compared to galaxyS. now this is just crazy. I'm at lunch and with 25% battery left.
Mar 18, 2011
I apparently have the same bug.
Since installing OS 2.3.3 my battery use shows 60 t0 65% use by the OS.
How do I install the older version, and wait for Google to debug the new one?
Mar 19, 2011
When is google finally going to acknowledge this issue and do something about it?
Or at least publish how to get the previous version restored.
Mar 19, 2011
I'm honestly surprised at Google's lack of interest in this problem. 

Can you imagine Apple releasing an update that basically cripples a flagship phone that is only one generation old and then not even acknowledging the problem (yet alone fixing it) 3 weeks later ?

Much as I like Android, this makes me MUCH more likely to look at alternatives in the future. I was going to buy an Android tablet later this year, but it looks like Google launched Honeycomb with a lot of bugs and problems. Can we trust them to improve it with patches? Or will they release a version that introduces new problems, and then do nothing about it?

The Nexus One may not have been a huge seller, but a lot of tech-savvy, early adopters trusted Google and bought into it. For me at least, that trust evaporates a little more each day. 
Mar 20, 2011
We all share the same problem with the nexus1. Lets face the truth, this is a deliberate ploy from google the phone is now conveniently useless. They will be hopeing 50% of us will be so handicapped and forced to upgrade or buy the newer Google phone. Clever but to much for this consumer, unless they where to provide a fix to this con very smartly. The sooner everyone is educated to this marketing con the sooner the fix will come. Keep coments coming...
Mar 21, 2011
Same problem here ;-(. I put my phone to AirPlane mode every night and i loose up to 50% of battry. Android OS is consuming up to 65 percent of my battery. Didn't expect such problems, Froyo had no such issue.
Mar 21, 2011
Same problem -- OS uses up 40% of the battery after upgrade.  Please fix!
Mar 22, 2011
Hello Google. Please fix this problem. Nearly a month of this thread and still priority "medium" and no official comment. Are you even working on this ?
Mar 22, 2011
since 2.3.3 the battery life for both my N1 and my wife is about 1 day at most.

In the past in battery use the Android OS was like 2-3%…now is over 60%!!!!!!!!!!!!!!

Cell standby is 10%, phone idle 10% , and the rest under 5%…I don’t use the phone at all during the day, maybe to make 1-2 short calls of a few minutes.

Mar 22, 2011
I think also that priority maybe CRITICAL not medium, 1 month that we wait a fix isn't possible.
Mar 22, 2011
I don't know if this has happened to others as well, but ever since the OS upgrade my battery has not been holding a full charge.  It charges to 93%-97% at most.  I am positive it was charging up to 100% before the upgrade.
Mar 22, 2011
As stated earlier in this thread, I too was having the same battery drain issue with Gingerbread 2.3.3.  Android OS was using 40% of the battery!!  Battery barley lasted 7 hours! Last night I switched my WiFi sleep policy to 'Always On' and amazingly, my battery life has returned!  Android OS after 7 hours off charge is at 2% usage.  My battery is still at 89%

Sounds counterintuitive, but it works! 
Mar 22, 2011
Priority-Medium, really?

I'm afraid to use my phone!!
Mar 22, 2011
I second everyone else's N1 has been running super weird since I manually upgraded to 2.3.3 Did anyone receive the over the air update?
Mar 22, 2011
Another Nexus One user with this problem. After an OTA update to 2.3.3 my battery life was utterly terrible. Checking the battery usage showed that Android OS was using roughly 50-60% of the battery each charge cycle.

After changing the WiFi policy to "Never" from "When screen turns off" battery life is significantly improved (though still not as good as on Froyo) and Android OS only uses ~2% (!) of battery usage.

Notably, even after changing the WiFi policy (and was the same before the settings change), the battery usage graph shows that the phone is "Awake" almost continually, despite the screen being turned off. Is this due to my WiFi (now) never being turned off? What about before?

It'd be great to get some acknowledgement and feedback on this issue. 
Mar 23, 2011
Let me just second everyone else here. I have the same problem, and I'm shocked that something this major can remain at priority medium for so long.
Mar 23, 2011
I'm experiencing the same problem. Before the update, I used to charge my phone every two days. Now I have to do it everyday.
Mar 24, 2011
Same issue as others on my Nexus S. With EVERYTHING off (then it became a useless smartphone) I can get about 18 hours og standby. With a couple of 10 min. calls a day.

Is it possible to rool back to 2.3.2 ? 
Mar 24, 2011
Same issue after updating to 2.3.3. The Android OS is taking 45% of the battery and the phone up time is less than 20 hours. Display and Wifi consume very little battery.
Mar 24, 2011
Having the same battery issues. Just a reminder Google/HTC: you're shortening the usable life of our batteries. I'm running through full recharge cycles twice daily. I have to constantly remind myself to plug in every chance I have. 
Mar 24, 2011
Please Google, do not use your ressources on "enhancements" use them on "defect"!! The issue list clearly shows alot of employees assigned to enhancement project. That what I call wrong priority!
Mar 24, 2011
I can  confirm the heavy battery consumption after upgrade too. This is very annoying. Please give this issue more attention. Thanks in advance! ++cp
Mar 24, 2011
The change to the WIFI settings was the fix for me - OS battery usage went from 60+ to 2%. Battery life has seen a MASSIVE improvement - I went from needing to charge my phone at around 3:30 each day (after the update), to letting it go to about a day and a half. Now it is better than when I was running FROYO.
Mar 25, 2011
I have exactly the same problem.   This issue has now been open for a month and yet the status is still 'new' with a medium priority.  Anybody here know how to escalate this issue within the project team?  Anybody got an internal contact they could nudge into action?
Mar 25, 2011
I have the same problem after upgrading (Nexus one). Loosing around 30% over night. When I kill the "maps" task it's getting much better: 9% over night. I think it's still worse than before but not sure about it.
Mar 25, 2011
Hello Kai (and everybody else)

Tell everyone you know to star the project. This way It will it will soon get to the top of the list. I too think its critical, since we only have to phones produced by google, and both phones have this issue!

You can star the project here:

look for  issue 15057 , and click the star.
Mar 25, 2011
Well, I've starred the project. Still amazed to find this is still medium priority. Like most, the only way to survive the day is manually control wifi having turned off the sleep policy
Mar 25, 2011
Still not fixed this is just not good enough
Mar 25, 2011
I have the same issue. Right after the update it started to happen. Disabling the wifi as suggested above worked for me. Hope they fix it in the next update. 
Mar 25, 2011
I just want to state I have a similar issue.  Battery life is terrible.  Mine however says the OS is only taking up 8% of battery but my display is at 60%.  I have always had my display set at the lowest light possible.  

Side note: My stock keyboard freezes and force closes at least 5-7 times a day.  Then when I open it back up, I can't see what I am typing.  I used to have to pull the battery to fix it, not it seems like if I just go into settings and force close, it fixes it.  Still really annoying.
Mar 25, 2011
I'm glad I checked for problems before downloading the update. I've heard in other places that battery life was the same or improved with this OS update, but it seems there is a large group who are having really bad problems. I have T-Mobile and an unlocked phone, and I've heard that might have something to do with the issue, so I will not upgrade until I hear that this is fixed. 
Mar 26, 2011
unplugged at full charge 1AM, woke up 7AM it had only 38% remaining! Battery usage 50% cell standby, 47% phone idle. I have good signal at home, so there's no reason for the phone to burn through 62% of its battery in 6 hours doing nothing. 2.3.3 is a horrible update. Setting wifi sleep to Never has no effect.  Nexus One AT&T.
Mar 27, 2011
I wonder how many of the people experiencing bad battery are suffering this bug instead :

(Suspend process using CPU while the phone should be sleeping. It is present in Android 2.1, 2.2 & 2.3)
Mar 27, 2011
I have nothing to add other than a negative comment. As an Android developer the number of substantive defects in Android has markedly increased, which makes we wonder where Google's resources are going?
Mar 27, 2011
Since I updated to Gingerbread my N1 is dead if in the morning if I don't put it on the charger at night. That is after I put it on the charger all day at work. I use WIFI very rarely. Is there some way I can go back to Froyo? I used to love my phone.
Mar 27, 2011
Since Gingerbread (Android 2.3), my Nexus One is "not good" as far as battery use. 
"Android OS" regularly shows 50 to 70 percent of the battery usage. 

The battery usage is a real serious problem... 

It's almost impossible to get 12 hours of "the phone is alive" during the day now.  When I get home from work, there's maybe 20 percent left and I gotta plug in immediately.  And on 2.2, I could easily go the whole day and still have 40 percent left at midnight - enough to easily get through the night (unless I tried to use the GPS a lot).

I've just now tried setting the "never sleep" setting on the WIFI.  Dunno if that'll help or not.  But I'll try just about anything.

I suspect this is related to WIFI, though... I've noticed my Nexus One doesn't seem to be able to connect to my home network reliably any more. 
My Chrome CR-48 netbook thing and other wireless devices around the home have no troubles connecting... but the Nexus One is having issues.  The Nexus One generally connects if I turn off its wireless, count to five, and turn it back on.  But that's lame. 

This should be a HUGE priority and Google ought to be getting this figured out. 

Mar 27, 2011
I have tried both the full OTA and the upgrade from FRG83G OTA and both have very poor battery life compared to froyo regardless of the state of the wifi sleep settings. I've since rolled back to FRG83G by flashing the FRG83 system image from and applying the updates to get to FRG83G manually as in recovery.

Battery life is significantly better now and apart from the annoying System Update available messgages I'm a happy Nexus user again.

Mar 28, 2011
My Nexus One's battery was draining overnight after the Gingerbread update. I found this page a couple of days ago and disabled the wi-fi sleep setting and it has more than doubled the battery life. Still not as good as before the Gingerbread update, but far less annoying than having the phone permanently charging.
Mar 29, 2011
This is a very irritating issue. I should always have to turn of WIFI to save battery life, but most of the times I'm completely forgeting to do that after I use it. 
Mar 29, 2011
Battery life is TERRIBLE. Nexus S with gingerbread. I cannot get through a whole day - I can't get through a whole work day. Today I don't think I will make it past 1PM.Is it 10:40 and I am down to 42% - it was fully charges at 7AM this morning. I walk around carrying extra batteries in my pocket like an addict carries Vicodin! Google Services accounts for 70% of my battery usage. 13m CPU time, 3h 20m of "Keep Awake" - what the heck is that??

Any Help out there? I am almost ready to go back to a Blackberry.

Mar 29, 2011
Same issue here. 
Mar 29, 2011
Yeah, I am having the same issue.  I hope google raises priority to very high.  
Mar 29, 2011
I've been getting this too. I usually just restart the phone if I notice it happening.
Mar 30, 2011
Same here, after upgrading to Gingerbread my N1 battery life is dramatically reduced!  I don't use latitude!!

Mar 30, 2011
I've flashed my samsung galaxy s with gingerbread and it is displaying the same symptoms mentioned in this issues thread, draining battery way to fast!
Mar 30, 2011
The pictures speaks for itself...
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Mar 31, 2011
Same issue here with HTC Desire and Gingerbread!
Mar 31, 2011
I have a related problem with the battery after upgrading to 2.3.3. The battery dies as soon as it reaches the 11% mark. Earlier, the battery used to last at least half hour when I used to touch this mark. Now the switch-off is very quick. Any ideas? Thank you for the time.
Mar 31, 2011
same problem as Brian (comment 277). Galaxy S flashed with oficial pre-release and now I must connect to the charger twice a day! With Froyo 2.2.1, with an intense usage, I had to recharge every 2 days (or day and a half)... I'm gonna try the "wifi sleep policy from `when screen is off´ to `never´ " and see how it works... 
Apr 1, 2011
If you set the sleep policy to turn WiFi off when the screen is blank the OS uses up all the battery in less than a day.  If you change the setting to leave WiFi on all the time the OS no longer uses up the battery.  Now the WiFi uses up the batter in less than a day.  If I remember to turn the WiFi off every time I use it, I can get 4 days on the battery.  If I forget to turn WiFi off, I have a dead phone in the morning.

I do not see any improvement by changing WiFi sleep policy, just a change in what process kills the battery.
Apr 1, 2011
I'm seeing a new problem now after changing my wifi sleep policy to always-on.  After 2-3 days of being connected, my router actually starts to refuse connections, and becomes inaccessible (No small task, as I'm running Tomato 1.28 on a WRT54GL, and until now, nothing has been able to bring it down).  I have to power cycle it to regain functionality.

I have repeated this 4 times reliably, and took a break after test #2 to see if the router was having other issues (it's not).  Upon resuming the tests, it went back to freezing up.

Conclusion - Man there is a serious problem with the wifi driver in 2.3.3.
Apr 4, 2011
That's it for me. Android is dead as far as I'm concerned. 
Apr 5, 2011
Hi guys,i have the same problem but my phone is galaxy s gt i9000,the problem same as above,Android OS uses more than 40% of battery,it fully charged I put it on table and do nothing went to sleep,tomorrow I saw that battery is 5%,please smb help with this problem,i couldnt use phone
Apr 5, 2011
The battery life of my N1 dropped significantly when it was updated to Gingerbread (OTA update). I had to charge the phone twice a day since a single charge would only last until about 2-4 pm.

Like many others have said, the problem appears to be the Wifi. My Wifi was originally set to the sleep policy. I switched it to always on and it has dramatically increased my battery life ... as long as I am connected to a wifi network. For example, when I am at home and always connected to my Wifi, I get fantastic battery life.

If I leave the Wifi always on and travel to locations where I am not connected to Wifi (at work), then it drains my battery fast, but not quite as fast as when it is on the sleep policy. If I am not connected to Wifi, then I turn it off and the battery life is very good again.

This has made my N1 usable again. Hope this helps some of the rest of you.
Apr 5, 2011
Am now the proud owner of a completely useless N1.

What on earth are Google playing at ? Thought you were the good guys.

I can live with the fact that there`s a problem - these things happen - but the deafening silence  - the failure to even acknowledge that a huge number of their customers are sitting on useless scraps (and very expensive) of machinery - from Google is infuriating.

Apple here I come.
Apr 5, 2011
And why on earth is this issue only `medium` priority ?
Apr 5, 2011
'medium' = they will do nothing... look at ALL those 'medium' priority. Some of them can be traced back since the beginning of Android. 

iPhone 5 will be my next mobile.
Apr 6, 2011
This should be high priority, i find my phone turned off countless time. Always when checking the battery use, i find > 50% Android os.
I did not have this issue prior to gingerbread.
I will try the workarounds but it is clear to me that Google needs to address this.

Apr 6, 2011
Guys i just found this,wifi settings isn't problem.because i dont use wifi very often and my wifi is off mostly,the problem is Calendar Storage proccess,i stopped this and changed calendar settings,and restarted after this battery live better,but when i play any game again Android OS working,then you must stop Calendar storage  process,do this solution but it isn't good solution for me

Google are you sleeping??
Apr 6, 2011
This must what the ball hitting the floor sounds like...
That is, after being dropped.

Google's lack of response to this issue does not inspire me with confidence in the platform.

As a, very small time, android developer I cannot help but feel my development platform (N1) has been deprecated way too early.
Apr 6, 2011
Before I buy any product I browse the boards to see what issues users are having with the vendor. Looks like Google really could care less about you guys or your Nexus One. Was close to buying the Nexus S, but will focus my research on a Windows Mobile device POSSIBLY Apple if the iPhone 5 is released in June. No support? No purchase.
Apr 6, 2011
seriously? a medium priority for this one!!? Must be critical! After a full night of charging, every evening, I go back home with a dead phone even w/o using it on any calls.
Apr 6, 2011
N1. I have been experiencing this since the OTA update to 2.3.

I have started to rely on my Windows phone supplied by work as I cannot expect to make calls on the N1 late in the day. This is a show stopper!
Apr 7, 2011
A problem has been identified in the driver for the wifi device on the Nexus One (bcm4329).  The problem can cause the phone to repeatedly enter its suspend state and immediately wake up, resulting in a severe degradation of battery life.  The problem has only been observed on Nexus One running the Gingerbread updates to the wifi driver and device firmware, although the driver is used in other phones as well.  A fix is in the works, but I don't have information on a release at this time.

Turning off the wifi device, or modifying the wifi sleep policy to never sleep, may avoid the problem in the meantime.

Apr 7, 2011
Fantastic, thanks for the information. 

In future, please feed back to your company that your customers expect that your response to a fairly significant issue such as this should be much faster than the 40 days that it has taken. 

Lets hope that now that the problem has at least been acknowledged, the actual fix comes reasonably quickly. 
Apr 7, 2011
I can confirm that changing the wifi sleep policy to never sleep has solved the problem on my N1!
Apr 8, 2011
You find it here:
Settings - Wireless & network settings - WiFi settings - menu button - Advanced - Wifi sleep policy
Apr 8, 2011
thank you for informing us, #297 !
Apr 8, 2011
Project Member #302
Although the Nexus One and Nexus S run pure Android, this issue tracker is not the place to report bugs for these devices. Please do so under the appropriate section of the Google Mobile Help Forum so the right people can take a look at it. If you have a feature request or issue directly related to the Android source code feel free to post it here.  Thanks!
Status: Declined
Apr 8, 2011
Battery life was fine before the last update, now it's not.  Why is it claimed that this is a device issue when it's clear a software change produced the new behavior?
Apr 8, 2011
Almost 2 months after the first post this is your answer!? Excellent customer service ;)
Maybe I'll have some attention from Google if I record and post on YouTube my attempt to blend my Nexus One and buy an iPhone to replace it.
Apr 8, 2011
Issue is 2 months old,  starred by 448 people, has over 300 comments, it's obviously a software issue.

Answer, a link to a list of forums.

Searching the forum indicates that it is a very widespread issue.
Apr 8, 2011
Declined? For heaven's sake.  This is surely a problem brought on by the software.  If this is the wrong part of Google, why can't you bring it to the attention of the right part?
Apr 8, 2011
The posting history ( indicates this individual isn't interested in fixing bugs, ever.
Apr 8, 2011
This was not the most diplomatic way to handle this issue.  Many
people have forked out $500+ for Nexus Ones and have Evangelized the
Google platform only to have 2.3 suck the life out of our batteries.
Don't you think we deserve a better response other than "not our
problem go away"?
Apr 8, 2011
I solved my issue... I turned off my wifi unless I actually need it. My unlimited data plan just has to suffer.
Apr 8, 2011
Ok this issue has been a thorn in our sides for some time now, but let's not fly off the handle too much.  It's a *driver* issue, which yes - is software, but it's device specific, meaning it's not part of the Android core, which this issue tracker is meant for.  Personally I participated here only because I couldn't find mention of it anywhere else.  The right people know about it now, so cheers.  Moving on!  (to the help forum, as directed)
Apr 8, 2011
#314 where is the customer support in pointing us to another message board to do a search on the same issue that results in A dozen similar threads?  How about spending the extra 10 minutes contacting your fellow google employee that manages the phone specific cases and provide the 300+ people that have posted and probally more that have starred to a central location to report this issue so we can get some traction on it?
Apr 8, 2011
It is handled to some extent by turning off wifi, but why should I turn off wifi
to deal with gingerbread software bug? Froyo did not have this problem on the same device, it's a 100% software issue.
Please un-decline and resolve!
Apr 9, 2011
I have now posted a question regarding this issue in the (I hope) correct forum:
Apr 9, 2011
#319  If you read these posts you will see that this is an issue with Samsung, Motorola, and HTC phones as well as Nexus One and Nexus S.  The statement in post 310 "This was not the most diplomatic way to handle this issue" can go down as the understatement of the decade.

As far as I can tell, this is not an issue with people who charge their phones every evening.  My phone goes 19 hours after the upgrade.  It goes 4 days with WiFi manually turned off when the screen is blank like it used to do automatically before the upgrade.
Apr 11, 2011
My battery-life goes like this: Steady down during day, in the evening with casual use it goes from approx 20% to shut down / 0% in 5 minutes! Without a warning. Im afraid that these rapid discharges could damage the battery!
Apr 12, 2011
I loved my Nexus One until the Gingerbread update.  My battery does not even last the whole day.  I don't even use the phone and it dies after a day.  Someone has to fix this.
Apr 16, 2011
I really thought Google would've hotfixed this by now. Revert if you have to but this is a joke.
Apr 17, 2011
same issue here. Just bought Nexus One, love the phone, but battery life with 2.3.3 sucks! Google fix this!!! Dont mess with your own reputation.
your new customer.
Apr 18, 2011
I am experiencing the same problem, I now have to keep the phone charged over night, since the battery drains completely if it is not completely charged before going to bed.
I really think that Google should get their act together and not leave users with such a terrible problem. I wanted to be a "Not an iphone clone" like everyone else I know, but now I'm wondering whether I should switch anyway, as none of my friends who have iphones are complaining about issues as often as I am!!!  
Apr 18, 2011
I hate you google!
Fix it ASAP or next time I'll spend my money on apple!
Samsung Galaxy S user with f***in 2.3.3 gingerbread
Apr 18, 2011
i messed with GB too... battery lasts 8 hrs, Android OS 77%

I9000 Galaxy S user.
Apr 18, 2011
This issue: "Nexus One + 2.3 Delay when answering or making a call" suffered the same fate. See

Google will not deal with the issue either because it should be reported in the "Google Mobile Help Forum".

Posting to the "correct" forum has not yielded any input from Google.
Apr 19, 2011
Greeting's from Luxembourg.
I have the same battery problems with my N1 since update to Gingerbread 2.3.3.
On battery use stats I have 'Android OS' using 72% of the battery.
Apr 21, 2011
There are 328 complaints so far and no fix. Since it worked before, I am sure this issue can be fixed. Maybe would be interested in hearing about this ... 
Apr 22, 2011
Battery Power does not last for more than a day with WIFI on. With WIFI off I have decent battery life. Is there a patch to fix this?

The WIFI sleep policy is set to when the screen turns off.
Apr 23, 2011
It fully drains my battery within 8 hrs, and during this period I did nothing but just left it here.
No matter Wifi is on/off, it still drain more battery than 2.2.1.

Google, if you cannot fix this bug, at least you should come out and admit this bug.
Apr 24, 2011
Is there a way to "rolled" back to older firmware?

This new update is driving me nuts. My phone can't even last half a day of usage>

This is crazy....
Apr 25, 2011
after upgrade to gingerbread, a fully charged battery on my n1 will run out of juice in just 8hrs. display drained 70% of the power, and was shown constantly on. switched live wallpaper to static one, and disable animation (chosen never). now the display is properly powered down when the phone is idle, and, after 8hrs, only 10% of battery power is consumed. live wallpaper could be one of the culprits of GB higher-than-normal power consumption. (btw, wifi was off in both scenario.)
Apr 25, 2011
#334 willaert.peter
Same problems here with My Nexus One on Gingerbread.
After changing the Wifi sleep policy to "Never" the battery lasted about 24 hours on normal use.
After a couple of days, I noted a huge battery drain. After 4 hours on my nightstand, the battery is down.
Use percentages: mostly Cell standby (35%) and Phone Idle (27%).
Even a hard factory reset did not solve the problem.

The battery is also running hot, more then before Gingerbread.


Apr 25, 2011
I think it's a 3g data not just a wifi issue.  I've tried all of the wifi mods to no avail.  If I turn off 3g data, my battery life is incredible, even with wifi still on.  My e-mail client is constantly checking, like it's in an endless loop, I believe that may be some of the issue.  No 3g data, the e-mail client can check and my battery last well over 24 hours.

A bad workaround, but it kept my phone alive on y last trip.  
Apr 28, 2011
Seriously google, please fix this. Like everyone else, my battery life is completed drained after a day of usage... this only happened when I upgraded to gingerbread.
Apr 28, 2011
pls fix this. on my galaxy s battery is down after 6h, "android os" process is killin my battery (70-80%)
May 3, 2011
Look guys...
I have almost same shit on Froyo 2.2.2.

Batt sucks more than could even after wifi is turned OFF.

I have Alog and Tasker installed and noticed interesting thing...

In tasker I have profile "Power on" that enables wifi & sync when device plugged. According to Tasker specific it restores previous state when profile becomes inactive.
At this point I should say after power plug/unplug things go ok.
So, when I unplug power Alog writes than wifi driver is unloaded.

I think its a point to understanding the way problem can be solved.

When I disable wifi manualy in "power controll" widget driver is not unloaded and seems cause problem.

I try to create one more profile than disable wifi via Tasker, when wifi switched off and see will it help.
I hope it will. Fingers crossed :)

May 7, 2011
I updated my Nexus One a couple of days ago and so far the battery life is wonderful.  I have not yet tested it in the absence of WiFi for extended periods but seems to me like they fixed it.  I changed the WiFi to off when display off and right now the top 6 battery users do not include the OS and WiFi is low on the list as well.  I am on version 2.3.4  I charged it last night and it still works fine after the recharge, nothing unusual.  I am very hopeful.
May 8, 2011
Same here, Galaxy S with Android system taking 66% of battery
May 8, 2011
Same here, Galaxy S. 
Battery lasts in idle around 10 hours. Great job!
May 8, 2011
Same problem with the Galaxy S2 :(
May 10, 2011
Same issue, 2.3.3 give high "android os" battery drain: 
Only temporary solution i found: disable background data in accounts (settings) 
May 10, 2011
No such temporary luck for me its sitting up in the 70%-80% range most of the time even when not in use.

Wow it sucks, might have to root and update to 2.3.4

May 11, 2011
I checked this forum before allowing the update to Gingerbread, and am glad I did. My N1 is currently on 2.2.2. It's been asking me for a few days to upgrade to Gingerbread MR2 (2.3.4). It looks like at least one person has upgraded and it has possibly fixed the problem. 
May 16, 2011
I wish I had learned about this forum before running the recommended upgrade to gingerbread 2.3.4  about 3 days ago.  My battery life has been cut in half.   
May 17, 2011
Since I put the latest update (2.3.4) on my N-One a couple of weeks ago the battery lasts noticeably longer.   I had put the poor battery life I was experiencing down to the poor signal I get at my work location, perhaps the update simply deals with signal drop out more efficiently.      Hope this helps you all too.
May 17, 2011
Galaxy S II 2.3.3 Battery drain not even got even half day by full charged battery. thanks GOOGLE
May 18, 2011
Setting the WiFi sleep policy to Never helps to increase battery life.
I got the 2.3.4 update and my battery life is worse now compared to 2.3.3.
Gingerbread has not added anything useful but has created all sorts of problems that Google is incapable of fixing.

Please star this issue and hopefully Google listens someday:

May 18, 2011
I and ten of my friends are going to send back our phone to the shop for refound. thank you again Google!
I did believe that Google cares about users but it seems that i was wrong, they r not even sending an answer that they are working on the problem they wont admit that there is a problem and a real problem with the Ginger bread, what i can do with a smart phone without resonable battery life?
 I believe we  are going to wait for Iphone 5. Google is ignoring the problem, they have been informed about it in several months but dont care to fix the problem. Such company not deserve to grow up by delivering waste products to the market. Bye Google and bye Andorid.
May 26, 2011
To everyone with major battery issues... Try the following: 

1. "bump charging" (Turn off phone, charge, unplug, charge, unplug, charge, unplug)
2. Wipe battery stats (Not sure how to do that on your specific device)
3. Calibrate battery (Fully charged, allowed to discharge fully, then recharge again)
4. Go to application manager and turn off software update.
5. Stop complaining in this thread, it takes far too long to sift through the spam for people who actually just want to read potential solutions.
May 26, 2011
P.S. Persistent bump charging lowers the life expectancy of the battery, doing it once is ok, just don't do it regularly.
May 29, 2011
I changed my WiFi sleep policy to 'never' on gingerbread 2.3.3 which helped with the battery life of my nexus one (back up to three days).

Recently I got the update to 2.3.4 and now the battery life is back down to 24 hours. 

So what's the fix this time?
May 29, 2011
I changed my WiFi sleep policy to 'never' on gingerbread 2.3.3 which helped with the battery life of my nexus one (back up to three days).

Recently I got the update to 2.3.4 and now the battery life is back down to 24 hours. 

So what's the fix this time?
May 30, 2011
My new SGS2 is almost useless now. The battery drains completely in a couple of hours even if I dont use it. This is a shock to me because I thought the battery life would have been improved.
Is it that I really have to get an iphone if I want my phone to last even for a day??
May 31, 2011
I have had similar issues on the SGS2. Incredible battery drain at unpredictable times. The phone gets really hot and the battery drains quickly. 

What I found out that works quite well on the SGS2 is to root it and then freeze all SNS and Social Networking processes. This improved estimated standby time to approx. 9 days. 

A further improvement was made by using a battery saving application (like e.g. Juice Defender Ultimate). That improved the battery life to approx. 13 days standby (2-3 % battery in one night) and this is satisfactory. Also I used only 19% battery today at work which is quite good (normally 2-3 times as much). 

Now I am not trying to advertize using all kinds of third party applications but trying to show also the case for more advanced connection management in Android since it can significantly save battery without sacrificing the usability of the phone. In any case, these measures seem to avoid the battery bug and improve battery life radically. 

Of course, the bug must still be solved. I still see events/0 and suspend taken approx 8% of battery life and they are still at the top of the list. And, of course, battery life should be good also with the samsung apps enabled. Also, with these improvements, the standby time is still far away from the advertized 600 hours by samsung so the problem definitely must be fixed.
Jun 1, 2011
Same problem here on my SGS2. Not lasting the day!! The Android OS drains about 60% of the battery? Turning off Wi-Fi seems to better the performance somehow.
Jun 2, 2011
Same issue on my SGS2...

After installing watchdog and let it run overnight, I can confirm that suspend and events/0 linux processes are the culprit for the Android OS battery drain in idle (stand-by) mode.

Watchdog caught them passing 20% of CPU in idle for more than 200 times over the night... sometimes I've seen values of up to 80% of CPU.
Jun 3, 2011
Got this on SGS II, Android OS using way too much resources!
Jun 5, 2011
Have the same problem myself on my Samsung Galaxy S2, Andoird OS easy chogs 60% battery if i leave my phone idle. 6-7 minutes of CPU time/hour.
Jun 6, 2011
HTC Incredible S: Have the same problem.
Standby time with Froyo was up to 4 days, now with Gingerbread I have to a max of 2 days.
Reported the issue with HTC, but I do not know if it is Android or HTC or something combined.
Jun 7, 2011
I am an a new Galaxy S 2 and I have this as well (on mine AndroidOS even takes up to 70%). Please make this high priority!
Jun 7, 2011
For those experienced high usage of Android OS, try wipe the cache using recovery mode. My problem solved after trying this solution. I am happy with my Galaxy S running Gingerbread now...:)
Jun 7, 2011
"The prevailing view is that the WiFi  Sleep Policy is the cause of the high battery drain. It has been suggested that having a sleep policy set to Never when plugged in results in the high Android OS utilization. I have tried switching to Never as the thread suggests, and this has worked for me."

Jun 7, 2011
Same issue with Droid X since upgrade 4 days ago.  Battery consumption significantly higher since upgrade to Gingerbread.
Jun 10, 2011
I have a new Samsung S2 and have this problem (Android OS showing 50% battery use or more). Always thought Samsung had botched up something and now surprised to hear it's a flaw in Gingerbread code itself. I turn off WiFi when not in use and manually turn it on. Is clearing 'Cache' the best solution ?
Jun 11, 2011
Galaxy S II 2.3.3 Battery drain not even got even half day by full charged battery its very a serious issue... mobile cant b use for a day.....
Plz try to fix this problem asap...
Jun 11, 2011
I have the same problem on my SS galaxy S2!! The android Os is using about 30-40% and the screen is using about 30%, the battery is keep draining even I don't even use the phone during my work time!!! Unplug charge in the morning from 100% then I went home and my battery is only 50% left, and I wasn't even use. This is terrible!!!! Please fix it Google. I don't want switch because I like the Galaxy S2 a lot!!
Jun 12, 2011
Same problem with the Evo
Jun 13, 2011
Same issue on galaxy S. How can this be medium priority?! A reboot after disconnecting from charger normally helps, but sometimes i forget, and my battery gets flat in hours. If that happens, Android system battery usage is around 60-70%..

how can something like this happen, and how come that Google doesn't recognize the high impact of this issue??!!
Jun 16, 2011
Same problem on Galaxy S. This issue must be categorizes as high priority bug!!! A fix needs to be developed ASAP. 

If Google programmer are not able to fix this quickly, then provide at least a possibility to downgrade to FROYO
Jun 16, 2011
Nexus one GINGERBREAD 2.3.4 with problem battery use android OS 48%. Tried changing wifi sleep policy as described didn't help. Phone is basically useless.ow can google ignore this? 
Jun 17, 2011
i am idling most of the time and also had this problem.

Android-OS drains battery very fast (40%-60%).

SGS II with 2.3.3 :-(

Please fix!
Jun 17, 2011
I have the HTC Evo with an extended battery and I can not get through the entire day now... 
Jun 20, 2011
Same problem on my Galaxy S i9000. The battery dies after the phose sits idle for approx. 10h. The devive also becomes realy warm. Android OS uses up to 50% of my batterypower.

The only thing that helped so far is to reboot the device after disconnecting from a wifi network. this brings the battery life back to normal but sucks as hell.

can someone tell me why this bus is on medium prio and status declined?? WTF??
Jun 22, 2011
For me the issue was resolved once I disabled auto updates on Latitude on my Droid X.  Yesterday after getting the Google maps upgrade, I turned auto updates back on and the battery seems to be holding up so far.
Jun 27, 2011
I had this problem on the Nexus One.  5 days ago, it seemed to go away.  I just upgraded to CM 7.1.0 RC (2.3.4 equivalent) and the drain is back with a vengance.
Jun 28, 2011
Nexus One, CM mod 7.
I started noticing the shortened battery life (With Android OS jumping up to ~50%, was never in double digits before) in the last couple of days. No OS changes, no settings change.

I did update a couple of apps (Google maps included) and installed a few.

I am trying out the wifi-'never sleep' attempt. I am not convinced why this would impact me since CM7 worked fine till last week.
Jun 28, 2011
Same problem with my 2.3.3
The Wifi-configuration doesn´t work. wifi, bluetooth, all settings off and after 8 hours the phone is dead.
Jun 29, 2011
Got my SGSII A week ago and with moderate use I'll go from 100% in the morning to about 30% by afternoon. Pretty bad I must say.
Jun 29, 2011
I have the same "Android OS hogging battery" problem and it began only in the last 2-3 days. 
Jun 30, 2011
I have noticed one more thing, that the 3G icon is lit up most of the time, indicating that some thing is trying to access the web all the time. So I went to my mobile phone online account and looked at the log of data bandwidth used. No surprise that within these last couple of days some thing in the phone has exchanged on an average 30 MB of data with the web. About every 2 hours. The carrier folks wont tell me which sites were accessed etc. So tonight I am connecting the phone to home wifi and enabling logging on the router. Tomorrow, I will probably have a good idea regarding which app or function on my phone is causing the problem. 
Jun 30, 2011
@prateekK That is interesting.  Please do report back with your findings.  I wish the battery meter was more straightforward as to what is sucking power.
Jul 3, 2011
I have the Nexus One. My camera flash goes off any given time it feels like it, my camera stopped working, and now my display use has increased and is running my battery down at an enormous rate. I have tried a factory reset and that didn't seem to help. I have taken the SD card out and did a factory reset and that didn't help either. Any help with this problem?
Jul 7, 2011
I used to be able to go a full day on my Evo (even with streaming some music and a little internet browsing), but now I can't make it past 2 p.m. Luckily I have an extra battery I can take with me to work, but this is a huge inconvenience. Please fix this!
Jul 10, 2011
Jul 13, 2011
I have two phones with the same problem cpu drains all the batery on 2.3
Jul 15, 2011
Galaxy S 2 here. I was getting a lot of battery drain and I managed to pinpoint it to Launcher Pro. I've since uninstalled that and now I can get up to 3 days worth.

I'm still having the random reboot issue though.
Jul 17, 2011
Galaxy S Plus here. I've got the same issue as you all. I've got android 2.3.3. on my phone, and my battery drains like hell. If I don't touch my phone at all, the battery will last for about 6 hours max. With my previous phone I wouldn't have to charge for about 2 days!

How can I solve this? My wifi is off, even as my bluetooth, GPS and so on.
I've just got my Twitter an e-mail using my network constantly, but even if I put that off it doesn't make a diffrence.

Comment 391: how did you get your phone to get up to 3 days worth?
Jul 17, 2011
HTC Desire HD user here. After update to gingerbread, my battery consumption increased approx 50%. While running Froyo my battery used to last at least 8 hrs, even with real heavy phone usage. Also, I've got impression that my phone is getting warm. There are some other issues with the OS. Yesterday my phone hanged twice (it never happened on Froyo!). Now it tends to hang a few times per week (sometimes even everyday!). As there's no way of downgrading to Froyo (beside shipping the phone back to HTC), please resolve it!
Jul 18, 2011
Samsung Galaxy S2 here. With everything at stock the phone last for 16 hours without beeing used. Airplane mode doesnt affect this noticable. Turning all widgets of doesnt affect it either. The phone/software is useless like this.
Jul 23, 2011
same problem here with my Galaxy s The only solution i found is to restart my phone everytime i charge it!!!
Jul 25, 2011
I had the same problem with LG Optimus One. After update to Android 2.3.3, the battery life was more than 3 times shorter (under 24 hours on idle).
I disabled wifi,3g, closed all the applications but it didn't make any difference.
There was anothe problem, with iGO My Way, the application was 10 times slower.
The only solution I found was to go back to Android 2.2.2.

Jul 26, 2011
Make sure you're signed out of latitude, since it's drains up to a third of your battery life. You'll see it as 'map' under battery use details. Also, anything that communicates regularly with the internet' like skype, will drain battery even when signed out. Last and most important, since the problem is most reported by people who upgraded to gingerbread, the quick drain might be caused by old battery calibration files left over from the previous version of the os. best thing to do here is to root your phone and install battery calibrator off the market. after running that, it's best to do a full charge/drain/charge cycle. has the best rooting guide.
Jul 26, 2011
I can also confirm that the upgrade to Gingerbread has cut down battery life in my Nexus One. Using Latitude seems to rocket power consumption. My WiFi suspension policy has been "never if battery is charging" until now. I'm trying now with just "never".
Jul 27, 2011
Galaxy S GT-i9000 with the same problem after update to Gingerbread... Battery is draning during night in idle mode with everything turned off (wi-fi, 3g, gps). Android OS consumes more battery than all others apps together... I think I'll go back to Froyo.
Jul 27, 2011
Also, Juice defender does a pretty nice job on my 2.3.3 galaxy s, even with the free version

Jul 27, 2011
Same problem, Android OS has used 40% of my battery in just 12 hours while before it was less than 10%. Since the update the phone doesn´t even reach an 18 hour day.
Jul 29, 2011
I have the same problem with my Samsung S GT-I9000. 
After I connect my device via USB, Bluetooth or wifi to my PC, the battery drains down 50% over night (~ 8 hours). Even if I disable Bluetooth and wifi immediately and stop all running tasks via advanced task killer or build in task manager.

As bonus to this problem, I am not longer able to send new SMS. Every time I write a SMS, the receiver only gets an old SMS, which I send him/her in the past. This problem was there in the past, but it did not appear that often. Only once or twice per month.

After some testing I find out a workaround, that works for me. Maybe it will help you.
After my device was connected to my PC, I restart it twice and wait some minutes between the two restarts. After the first restart, the battery problem is gone and after the second one I am again able to send new SMS.

This workaround is ok for me, but I think these problems should be fixed. Does anybody also has the problem with sending SMS?
Aug 1, 2011
I have purchased Samsung galaxy S2 couple of days back and facing the same issue. I have optimized the power settings and removed all animations and turned of WIFI, bluetooth, switched to 2G, killed unnecessary tasks. However observation is that battery drains over night and takes hours to recharge. This is big problem and should be treated as a HIGH PRIORITY ISSUE. I insist Google to release the fix ASAP. 
Aug 4, 2011
OK. After reading everyone's updates I believe that the Batery Usage stats are completely wrong and the battery drainage is caused by Gingerbread itself and not the Wi-Fi settings or display brightness on its own.

The Battery Usage stats on my phone show Display - 59% and Android OS - 12%. 
It can't be right though as I have brightness set to very low and I don't use my phone that often anyway. 

There must be something wrong with Gingerbread and this has to be resolved quickly. 
Companies like HTC, Samsung, SE etc should be pushing Google to resolve this problem as soon as possible. Also Google should thinks about the customers they may lose. 

At the moment we are left with the phones that we cannot use properly in order to avoid battery drainage.

Aug 5, 2011
Same problem here with my S2. Andriod OS is using 55% of the battery all the time. 
Fully charged to dead takes about 10h, and then I dont use it at all. 

Aug 5, 2011
Same problem here with my s2. the distribution is as follows

Brightness :- 37%
Android  System :- 9%
OS :- 8%

Though I didnt use my phone much, its like full charge @ 8AM, but was flat by 3 PM.On checking the graph it says PhoneSignal was used throughout for 12 hrs..... 

This is very less life for a smart phone battery and a major major issue with Samsung Phone (might be android Gingerbed).....

Request Google, Samsung to get this rectified at earliest as this is going to be a major roadblock for Galaxy sales going forward
Aug 8, 2011
This ticket is not going to be processed by google since it was declined and closed on april 8th.

Does anyone has knowledge of a similar ticket? I have the same problem with the galaxy s on 2.3.3

I always turn of my wifi manualy. I don't have location+security options turned on.

I set my phone to defaults. After that it seemed ok for some days, maybe a week but now it came back again.

Is this maybe some kind of malware?
Aug 10, 2011
Ok, so I had a similar battery draining experience with my Samsung Galaxy S II (SGS 2). I was on KG6 with DarkyROM2 and on Ninphetamine 2.0.5 and was going through battery in about 20 hours with a couple of widgets and background processes like Viber, WhatsApp and Lookout. I also had Latitude turned on. So basically I had all the latest app updates and ROM updates I could think of and my phone was not able to hold its battery for atleast a day. I guess I use my phone moderately, like hooking up to my car via bluetooth and occasional Navigation use and also Gmail and Email.

I decided to do a complete system wipe and reinstall everything from scratch, and use everything that I used before except for Latitude. After upgrading everything Latitude was the only piece of software that I did not activate. And I must say it made a huge difference in battery life. I am at about 23% after 30 hours with Bluetooth on for about 3 hours and about an hours worth of calls and about 30 app installations and running benchmarking suites a couple of times.

In both these cases my Android OS percentage remained fairly high, so I guess the one thing that made the difference was NOT turning on Latitude. I dont know why Google closed this, probably Samsung has some issues with its drivers. But Latitude is the battery hog as far as my phone is concerned.

Hope this helps diagnose and rectify this issue by Google/Samsung or anyone else.
Aug 16, 2011
guys, please vote for this issue to be fixed

It's a bug with dialer after receiving a call. You need to restart the call or charge your phone to the max for dialer to exit.
Aug 19, 2011
People seems to be forgetting that the processor and Memory is constant and the OS is being upgraded. Its like running Win 7 in a 286 or 386 machine. It defenately sucks. We need to know the processor speed and memory. In fact on my 600Mhz, 512 RAM, 256 ROM running on Gingerbread the following are the process and battary usage

Goggles - 50%
Android System - 16%
Maps 9%
Compass - 9%
Galarry - 9%
Camera - 9%

Now can someone tell me how to kill Goggles. Issue is it is not showing in the Running Applications but showing up in Battery use. 

Mysore India
Aug 24, 2011
after alot of search for resolving this problem, i have get this solution from most of people.    restart your phone after charging or phone call.
google should reslove this problem otherwise people will kick off android for ever.

Aug 26, 2011
i have this problem on my HTC sensation 4g.. Google Please fix it for god sake... i have tried everything to save battery but no luck....
Aug 31, 2011
Same problem on my new motorola atrix. I installed gingerbread and my battery life now sucks.

How the hell did google release this major update with such a horrible problem?

And how do you revert to the previous version of android?
Sep 1, 2011
Same problem on Galaxy S i9000b. Google please do something.
Sep 3, 2011
I noticed this is an issue when using active sync to connect to hotmail or exchange servers.

Without active sync (no exchange or Hotmail configured) battery life is awesome.
Sep 5, 2011
I found on my phone (LG Optimus One updated to Android 2.3.3) that the battery drain happens in 2 cases: I have wifi set to turn off when screen is off, or I have active sync on.
With wifi set to never turn off, with active sync off, and after a battery calibration (using Battery Calibration application from Android Market), the battery is getting about the same life as with Android 2.2.2 (around 2-3 days), which is very good.
Sep 6, 2011
The problem for me was definitely the stock email app continuously polling my Exchange server, killing the battery and my data plan. I resolved it by removing the Exchange server from the stock mail app, and by using Nitrodesk's excellent Touchdown app for mail instead. Touchdown isn't free but it's very good. And now my battery performance is back where to it was prior to the Gingerbread update.

Thanks, Google, for carefully testing this update before releasing it on the unsuspecting public (NOT). You caused a lot of grief for a lot of people. 


Sep 7, 2011
FUK that
we need suoltion and we need it fast
Sep 8, 2011
I'm using android 2.3.5 (GDX custom ROM for SE X8). I experienced the same issue since I upgraded to gingerbread. The solution was to Force Stop Maps after every time I use it.
Sep 8, 2011
This is ridicules. So much activity on the ticket after it has been declined and noone at Google cares! I have Galaxy i9100 and I am affected by Latitude battery drain bug. Google, can you 'google' the net and see that this defect impacts every Latitude user? 
Sep 8, 2011
i have a nice solution for this problem. and it works for me.
charge your phone battery full till it say for unplug, or if u could not charge it fully then restart your phone once after some charging. this will really not drain your battery. i am having galaxy i9000.   gingerbread version 2.3.3 
every one should try this. because it is the best solution
Sep 9, 2011
The wifi solution is not working. Off or not my android os is at 80%. and i have the 2.3.4 version.
Sep 10, 2011
Finally I couldn't find what starts the drain, after a battery calibration it was good for some time, then suddenly the drain was back again.
The only solution was to return to Androiod 2.2.2.

Sep 11, 2011
Google, please fix this bug asap - I just moved from iPhone to an Android phone and had no idea about this issue. My phone doesn't even last 7 hours - and i have already turned off 3G, GPS, Bluetooth. What's the point of getting a smartphone if I have to turn off my WiFi as well - I might as well stick to Nokia phones with solid batteries. Really disappointed with my first try at Android.
Sep 13, 2011
I am too facing battery drain problem on my samsung galaxy s after the gingerbread update. Earlier, turning off automatic update, background data and location seemed to have fixed the problem but now the problem is back. This is so frusrating!! This bug needs a fix as soon as possible.
Sep 15, 2011
Had my G2 update to Gingerbread a couple of weeks ago and noticed a HUGE DROPOFF in battery performance.
I have since got a G2x, and am having the same battery performance. I don't have anything running other than critical applications and standby is using 45% of my battery
Sep 19, 2011
I notice at the top of this thread: "Status:  Declined  "
Does that mean Google will not fix this? Bazillions of Google phones have been rendered useless because of this bug, and they are not even considering fixing it? 

Oct 4, 2011
+1 with a is severely draining the battery. All standard settings are disabled (data, gps, wifi, bluetooth, etc.). Previously (about 6 weeks ago) the battery would last atleast 2 days under normal conditions (few to no phone calls, plenty of texts) and the battery would still have 50% charge.

Charged the phone last night and 20 hours later it is nearly dead. The graph goes down slowly for the first 10 hours or so, then bam it drops. Dialer is at 40% of usage.

This needs to be fixed soon.
Oct 5, 2011
This is ridiculous and I don't know why this wasn't fixed ages ago. I wish my Samsung Galaxy S2 was running Froyo and as a result I will not be updating my Atrix to gingerbread when it becomes available. Although this may be resolved in the Ice cream sandwich release it's gonna be an age before it filters down to other handsets after being pushed on the flagship Nexus handsets. Google pull your finger out!
Oct 9, 2011
#432 jeff.steadman
Experiencing this bug on AT&T Samsung Galaxy S2. Please fix!
Oct 12, 2011
I may have found why WiFi drains the battery: it's being used to determine location. You can turn this off in Settings > Location and Security. Then uncheck 'Use wireless networks'.

Oct 16, 2011
Why is this thread marked "Status: Declined" and "Closed: Apr 8" ?  Did Google in fact pull its finger out?  Is there a fix other than leaving WiFi on all the time?  Doesn't that eat up lots of battery, too?
Oct 20, 2011
I noticed in my PC Firewall software (Agnitun Outpost Pro Security Suite)in the Event Viewer(logs) that my Incredible running 2.3.4 is "pinging" the network every 15 seconds. The Target address is ff-ff-ff-ff-ff-ff (all ones) and the same thing with the port. I never noticed this behavior when I was running Froyo. I am trying to find a way to change this ping to something like 60 seconds or greater but have not figured out how to do it yet. In /system/build_prop there is is a parameter "wifi.supplicant_scan_interval=15". I changed this to 60 and 45 with no change. I think it has to be incorporated somehow into a system file to be used. I am new to android, but I am wondering if the kernel has to be recompiled for this change. Anybody know?  
Oct 20, 2011
Same here. Update 2.3.3 Droid Pro. Battery is horrible after Gingerbread update.
Oct 21, 2011
My battery life seems about the same as Froyo after I calibrated the battery. I did not realize that battery cal after a battery change or ROM change is mandatory! (For correct power display) 
Nov 6, 2011
I had this behavior come on suddenly after 6 months with the phone, here's how it recreates(DroidX, gingerbread V2.3.3)
- Shut down and take out the battery & put back.
- Start the phone and battery life is normal (2 days on light phone use).  Battery use of Android OS is none in usage display.
- Start Navigator and shut it down (after full charge and restart)
Battery life is no longer normal, Android OS now takes up to 98% of the battery and it drains as fast as 6 hours while sitting idle on the counter.
Can't say Navigator is always what triggers it.
Nov 9, 2011
same problem here...maybe they don`t know how to fix it...
Nov 9, 2011
I'm still pinging every 15 seconds, but even with that, my battery life is about the same as it was with Froyo. I loaded an incredible app that makes my battery last at least twice as long. It is called Green Power and is in the market. I am not affiliated in any way with these people, but this is a fantastic app. I tried it, then bought it. This app also let me stop running Locale which I was using to control WiFi and Mobile networks. Try it, it'll help with the battery until they fix it, but even then I will keep using this app.
Nov 15, 2011
Sprint EPic 4G just got 2.3.5 and same issue.
Nov 17, 2011
Observed on my Wildfire S too. Iam unable to use this as 'smart'phone as I cant use all the features of it..  :(
Nov 27, 2011
Since the update my phone goes dead while plugged in!  The phone doesn't always charge even though it is plugged in.  It will completely drain the battery in a matter of about 6 hours then only when the battery is completely dead will it recharge.  Then it only runs for about 6 hours while idle.  This is terrible!
Nov 28, 2011
I have samsung galaxy s. my battery drains out in morning completely (even I had slept for just 4 hours normally). Battery was fully charged when i normally go to sleep. Strange fact is, it works fine during the day. But I guess battery  drains out when the phone is idle. I have wi-fi sleep policy already set to 'never'. Wi-fi is off most of the time. Never used google latitude. Can any one tell me please the solution. :( If it cant be cured should I leave my phone on charge whole night?
Dec 15, 2011
I just received and installed update 45.21.78.en.CA on my Atrix. I'm hoping it helps with the horrible battery performance issues that were introduced by the upgrade to from v2.2 (Froyo) To Gingerbread. 

Jan 12, 2012
Samsung Galaxy S2 here, battery is eating away while on idle and can drop from 98% to 40% overnight. 
Feb 19, 2012
same problem... nasty thing. is this not solved yet?
this is sooo wrong!
Feb 19, 2012
Samsung Captivate and the same issue.  Froyo I could get two days of battery life.  Gingerbread I take it off the charger at 6 a.m. and by 10 p.m. it is in the yellow.  Step up the priority on this.

Mar 13, 2012
 I am still facing the similar issue with LG optimus one P500 ... come on google can't we fix this ... or provide support to revert to Froyo .
I like android a lot  ... 
Mar 19, 2012
After reading this thread, I think about buy another phone (iPhone, maybe?). At least, they someway, talk to us and do not leave us with problems (do they have the same problems? I don't see thousands of forums talking about problem as Android). I really like Android, but with Google best ever support which can't even answer, it becomes kind of boring being customer of it - "Have a problem? Fix it yourself." I've been with this problem for 2 days. I set my clock to 5:30 PM but guess... the battery was dead (again). This little things make me think that Google isn't so great. If you need support then, forget it. I'll see nothing as answer.
May 8, 2012
I had the exact problem. I have a refurbished nexus one which for a month was gettig 14-16 hours with wifi and data on for most of the day. The one day suddenly started getting hot and draining all power while not in use so basically in 4-6 hours would be shutting off because no more power.  I looked for solutions online which all recommended software resets, battery pulls, calibration and whatever else. Nothing seemed to work. So I thought it was a hardware problem. Took it apart didn't see anything loose or broken and when putting it back together pulled off the power button (by accident) from the black power strip which also has the camera and flash attached to it. (look at ifixit nexus one teardown for some pictures) So I bought a new power strip, replaced it, charged my phone to 100% and its back to its original state. Not saying that this will 100% solve your problem but if you have a nexus one that suddenly only gets 4-6 hours on a battery and none of the other solutions worked for you perhaps worth investing in doing this before buying a new phone.
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Jul 11, 2012
For the phones that don't have any chance to get an update to Android 4 ICS, the only solution to solve this power drain problem is to get back to Android 2.2 Froyo.
I did this 9 months ago on my LG Optimus One and I'm very happy with my phone, I get even 4-5 days on moderate use.
Jan 7, 2013
This is a big issue. I thought the root cause was my battery but I changed 4 of them.
I have a Zhou Xing phone ( Alps htt77_ics). Very good phone but with this issue for battery drain. My experience is that if I switch off the phone and then I switch on battery % goes down for 5-10%. Pls...find solution I saw the same issue for a lot of phones for different brands
Oct 23, 2013
This fixed the issue for me on my Atirx 4G:
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