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Old December 19th, 2011, 11:30 PM   #1 (permalink)
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Default Bad Battery Life? For those experiencing excessive "Keep Awake" Android OS usage, read on...

For those of you experiencing bad battery life and/or witnessing high "Keep Awake" times, an issue/defect has been filed on code.google.com:

Issue 22878 - android - Galaxy Nexus ICS 'Android OS' High Battery usage - Android - An Open Handset Alliance Project - Google Project Hosting

Apparently, many Nexus S owners have chimed in claiming their battery life has taken a turn for the worse after upgrading to ICS. I suggest folks click the link above and "star" this issue so that it gets elevated to high priority. You can "star" it by clicking on the star next to "Issue 22878".

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Old December 19th, 2011, 11:35 PM   #2 (permalink)
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Quote:
Originally Posted by cosmosan View Post
For those of you experiencing bad battery life and/or witnessing high "Keep Awake" times, an issue/defect has been filed on code.google.com:

Issue 22878 - android - Galaxy Nexus ICS 'Android OS' High Battery usage - Android - An Open Handset Alliance Project - Google Project Hosting

Apparently, many Nexus S owners have chimed in claiming their battery life has taken a turn for the worse after upgrading to ICS. I suggest folks click the link above and "star" this issue so that it gets elevated to high priority. You can "star" it by clicking on the star next to "Issue 22878".
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Old December 19th, 2011, 11:42 PM   #3 (permalink)
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I'm very happy with my phones battery life.
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Old December 19th, 2011, 11:46 PM   #4 (permalink)
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Originally Posted by XFistsClenched View Post
I'm very happy with my phones battery life.

Good for you.

However, if you're experiencing the high "Keep Awake" times, I still suggest you click the link and "star" the issue. As good as your battery life may be now, imagine how good it will be if they resolve this issue.
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Old December 20th, 2011, 12:03 AM   #5 (permalink)
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Originally Posted by cosmosan View Post
Good for you.

However, if you're experiencing the high "Keep Awake" times, I still suggest you click the link and "star" the issue. As good as your battery life may be now, imagine how good it will be if they resolve this issue.
Exactly! Could not have said it better myself. I actually like the battery life so far. However, the Android OS usage is @ 18% after ~12 hours on battery here and the keep awake time is 4h 40m 52s.

something is not right...the only explanation I have is that the LTE/3G signal issues and toggling/etc are contributing to battery usage categorized as "Android OS", but I have no idea how that could be or if it even makes technical sense in ICS.

But seriously people, the Android OS usage should not be this high. Or if it is (due to many things being combined in this one lump reported category), the least Google could do is explain WHAT composes this "Android OS" report out and how we can see what the breakdown is for it (if possible) via debug or logcat or whatever.
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Old December 20th, 2011, 12:32 AM   #6 (permalink)
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Everyone with a galaxy nexus should be starring this issue/defect.
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Old December 20th, 2011, 12:45 AM   #7 (permalink)
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Originally Posted by jkc120 View Post
something is not right...the only explanation I have is that the LTE/3G signal issues and toggling/etc are contributing to battery usage categorized as "Android OS", but I have no idea how that could be or if it even makes technical sense in ICS.

If LTE usage does indeed fall under Android OS, which is quite possible, it's perfectly reasonable that it would take up a high percentage.

I really hope that someone can make an LTE toggle widget, though. Seems like such a no brainer that I'm surprised it's not included as part of the power control widget or from Verizon on all 4G phones.

The "keep awake" runaway drain shouldn't be happening though. Hopefully some simple settings (disable button click sounds, etc.) and software updates can fix that.
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Old December 20th, 2011, 01:08 AM   #8 (permalink)
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Some people stated that they've had the problem in airplane mode too, so its likely not 4g.
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Old December 20th, 2011, 02:01 AM   #9 (permalink)
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Some people stated that they've had the problem in airplane mode too, so its likely not 4g.
Has nothing to do with 4G. I haven't had LTE on since I bought the phone and I have the "issue". Part of me wonders whether or not its just a change in how ICS reports battery usage but I'm guessing we'll see as the devs get further with kernel tweaks and the likes.
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Old December 20th, 2011, 02:43 AM   #10 (permalink)
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now that you mentioned this i looked at the history and i do have a lot of keep awake. i also noticed in the screenshots people are posting, there's not so much. how do i diagnose what's causing the phone to wake up?

edit: looking at it some more, it's "android OS" - keep awake 3 hours of 14 on battery
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Old December 20th, 2011, 05:08 AM   #11 (permalink)
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Originally Posted by XFistsClenched View Post
I'm very happy with my phones battery life.
Yeah I was too until yesterday morning when Android OS decided it was going to come out of the woodwork and cut my battery life by a factor of 3.
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Old December 20th, 2011, 05:34 AM   #12 (permalink)
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Very unlikely it's LTE-related. I have a GSM unlocked GNex and am experiencing the same "keep awake" time.
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Old December 20th, 2011, 06:41 AM   #13 (permalink)
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Quote:
Originally Posted by Jersey Tom View Post
Yeah I was too until yesterday morning when Android OS decided it was going to come out of the woodwork and cut my battery life by a factor of 3.
Ditto.

It's not screen
It's not 4G.

I disabled 4G, left phone in 3G only. Unplugged at about 10:00 PM and left it idle after killing apps.

Woke up in the morning and the phone was at 60%!!!! Ridiculous.

Android OS usage was extremely high. Forget how high, but it was at the top of the list and a very high percentage of use.
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Old December 20th, 2011, 06:46 AM   #14 (permalink)
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I agree something seems to be draining the battery from the phone when its in standby. I dont think it would last long enough to live up to the 150hr standby time quoted even if you never touched it.
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Old December 20th, 2011, 09:36 AM   #15 (permalink)
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I think it has something to do if you are switching from wifi/4G/3G/2G even if you're not using the phone. If you stay at one place with wifi enabled and set it to never go to sleep, it seems to vastly improve battery life and Android OS "awake time" is less. I average 3% battery drop over 1 hr in this case with no use.
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Old December 20th, 2011, 09:51 AM   #16 (permalink)
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I think it has something to do if you are switching from wifi/4G/3G/2G even if you're not using the phone. If you stay at one place with wifi enabled and set it to never go to sleep, it seems to vastly improve battery life and Android OS "awake time" is less. I average 3% battery drop over 1 hr in this case with no use.
Don't think I agree. I've kept my Wifi and 4G disabled as of late, and I am seeing quite a bit of awake time. Even while I'm asleep.
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Old December 20th, 2011, 09:53 AM   #17 (permalink)
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Just wanted to chime in and say that my Galaxy Nexus shows the OS using a ton of battery. I also starred the issue.
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Old December 20th, 2011, 10:11 AM   #18 (permalink)
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it isnt 4g, data, or sound, or widget related. I turned off all of that last night and when i got up, took this screen shot. Something woke up my phone twice for a long period of time. I factory reset my phone right before this so i had no apps other than stock either. Im on 4.0.2 Reading the link above, it looks like 4.0.3 doesnt solve the issue.
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Old December 20th, 2011, 10:31 AM   #19 (permalink)
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Quote:
Originally Posted by jimmypop13 View Post
it isnt 4g, data, or sound, or widget related. I turned off all of that last night and when i got up, took this screen shot. Something woke up my phone twice for a long period of time. I factory reset my phone right before this so i had no apps other than stock either. Im on 4.0.2 Reading the link above, it looks like 4.0.3 doesnt solve the issue.
You have 90% battery after over 9 hrs of use - that's great! What was your #1 battery use? If it's not "Android OS", this is significant.

This is the 2nd time i've heard of doing a factory reset and then just letting it sleep and seeing great battery life. We need to start adding things 1 by 1 to see what is making "Android OS" the top battery use. I'd start with just playing with it a day, then repeating the same study the next night.. Would be interesting if "Android OS" wasn't top of the list still.
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Old December 20th, 2011, 10:43 AM   #20 (permalink)
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Please reference this thread for AndroidOS high wake times --

Battery Life Test - Android OS

Thank you.
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Old December 20th, 2011, 04:28 PM   #21 (permalink)
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According to one of the users on the issue/defect page, Google has pulled the ICS update for the Nexus S, so it may mean they're working on a fix now...
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Old December 20th, 2011, 06:35 PM   #22 (permalink)
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I have the same issue, phone is awake 100% of the time.

You can view&star the issue:
code.google.com/p/android/issues/detail?id=23301
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Old December 20th, 2011, 08:06 PM   #23 (permalink)
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I just looked at my stats and it said that my keep awake time was 11h 11m 11s and the CPU total was 2h 24m 58s. That's insane if its keeping my phone awake the entire day. I uses my GPS for work all day so I haven't been able to tell what kind of battery life I am getting.
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Old December 20th, 2011, 08:16 PM   #24 (permalink)
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Quote:
Originally Posted by somethingelse View Post
You have 90% battery after over 9 hrs of use - that's great! What was your #1 battery use? If it's not "Android OS", this is significant.

This is the 2nd time i've heard of doing a factory reset and then just letting it sleep and seeing great battery life. We need to start adding things 1 by 1 to see what is making "Android OS" the top battery use. I'd start with just playing with it a day, then repeating the same study the next night.. Would be interesting if "Android OS" wasn't top of the list still.

Lol. I wish that was my normal battery life over 9 hours. I only used the phone for around 15 minutes before I went to bed and I had also turned off the 3g and 4g radios. Normal battery for me is more like 6 hours
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Old December 20th, 2011, 08:56 PM   #25 (permalink)
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For some reason, mine says voice calls 34% (of the 14 hours of use). I made one call of 50 seconds. Something is wrong. I also occasionally get an "android has stopped" message when I get a call. Any ideas?
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Old December 20th, 2011, 09:01 PM   #26 (permalink)
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Quote:
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For some reason, mine says voice calls 34% (of the 14 hours of use). I made one call of 50 seconds. Something is wrong. I also occasionally get an "android has stopped" message when I get a call. Any ideas?
that one 50 minute calls was responsible for 34% of your battery life drain. this is normal.
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Old December 20th, 2011, 09:02 PM   #27 (permalink)
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Quote:
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that one 50 minute calls was responsible for 34% of your battery life drain. this is normal.
50 seconds.
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Old December 20th, 2011, 09:22 PM   #28 (permalink)
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A guy on another forum said it was a bug with google talk that activated the camera, and that the camera was causing the OS not to sleep... he said he rebooted his phone and force closed the camera and it let his phone sleep...i tried this.. desperate to see if it would work for me.. before i tried, the battery indicator said android OS at 40 something percent then i tried it and it dropped the android OS down to 15% and now im getting decent batery life..at 8 hours i have 62 percent...i hope this helps someone
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Old December 21st, 2011, 08:31 PM   #29 (permalink)
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Quote:
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A guy on another forum said it was a bug with google talk that activated the camera, and that the camera was causing the OS not to sleep... he said he rebooted his phone and force closed the camera and it let his phone sleep...i tried this.. desperate to see if it would work for me.. before i tried, the battery indicator said android OS at 40 something percent then i tried it and it dropped the android OS down to 15% and now im getting decent batery life..at 8 hours i have 62 percent...i hope this helps someone
Has anyone else given this a try?
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Old December 21st, 2011, 08:54 PM   #30 (permalink)
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i think its google plus. i disabled G+ today and my awake time went down
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Old December 21st, 2011, 09:05 PM   #31 (permalink)
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Quote:
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i think its google plus. i disabled G+ today and my awake time went down
I heard about that in the TB days and I had just deleted the app back then. For now I froze it in TiB and I'll monitor. Thanks for the suggestion.
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Old December 21st, 2011, 10:07 PM   #32 (permalink)
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Just got off a 6 hour flight with my phone on airplane mode the entire time. Used 30% power and I was listening to music for a good 4 hours.

Landed, phone set to 3G, switched location service on. Slept for 3 hours and my battery was nearly gone. I've done a few test and each time, location seemed to be the worse offender. Don't know if that means its location service alone or i have an app running that is overly aggressive.
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Old December 22nd, 2011, 12:10 AM   #33 (permalink)
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Originally Posted by zerocool79346 View Post
Has nothing to do with 4G. I haven't had LTE on since I bought the phone and I have the "issue". Part of me wonders whether or not its just a change in how ICS reports battery usage but I'm guessing we'll see as the devs get further with kernel tweaks and the likes.
Same. I don't live in a 4G area, so I haven't been able to use 4G at all, and my battery life is still less than awesome. It's definitely not 4G, IMO.
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Old December 22nd, 2011, 12:13 AM   #34 (permalink)
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i think its google plus. i disabled G+ today and my awake time went down
Total noob question, but, how do you "disable" G+? Thanks.
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Old December 22nd, 2011, 07:10 AM   #35 (permalink)
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Trying to understand my life as well-- it seems really crappy.
I used a phone a bit yesterday, then let it discharge all night. It did this. There are some awake times, but nothing super high. Android OS was at like 75% of the usage.
Ignore the 1x, that's not normal.

Battery life seems super crappy. It's the 2nd or 3rd day on the extended though, so I thought the calibration period should be done and not affecting things.



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Old December 22nd, 2011, 07:14 AM   #36 (permalink)
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Quote:
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Total noob question, but, how do you "disable" G+? Thanks.
I uninstalled it. I dont facetweet or any of that social networking crap.
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Old December 22nd, 2011, 07:15 AM   #37 (permalink)
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The 4.0.3 update will prob fix this. Not worried, its not a motorola phone.
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Old December 22nd, 2011, 07:33 AM   #38 (permalink)
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Another thing to try since we are ultimately looking at battery life is this:

Settings/Accounts and Sync/Gmail

and see all the stuff that Gmail is syncing up....what a list! If you have a hotmail account there is also a list of stuff. I don't use most of those things and I suspect most don't. I unchecked a number of items last nite and don't know how much of an impact it will have but it can't hurt. While you're at it, check your other accounts and what they are syncing up.
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Old December 22nd, 2011, 12:27 PM   #39 (permalink)
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Quote:
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Has anyone else given this a try?
I did, not sure of results. AndroidOS definitely isn't my highest battery offender now.

Oddly enough, MediaServer is my highest user after doing that. Going to restart this b...
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Old December 22nd, 2011, 02:38 PM   #40 (permalink)
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You know I updated my Xoom (wifi) to an ICS 4.0.3 rom (EOS) and I checked the battery stats this morning. Android OS was second behind screen time, which was 2.5 hours. Wake lock on Android OS was 4.5 hours while the device was off the charge for 15+ hours.

Obviously I was only on wifi and most of my battery drain was from the screen (I was at 68%), but that is a very high time on wake lock. I checked my Droid X with CM7 on it which was off the charger for 9 hours the day before and I had no wake lock with only a 20+ minutes of cpu usage.
The kernel on the Xoom rom is only 2.6 something.

I don't have a Nexus yet (next week hopefully!), but it seems like there is something going on in ICS at the system level that isn't device specific.

Btw, ICS on the Xoom is devine. It is 85% fully useful now. The browser is amazing and is nearly a desktop version of chrome. The only remaining problems is the Tegra2's crappy codec support which Dice Player halfway fixes.
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The Galaxy Nexus is the third official phone contracted by Google and the first phone to come with Android 4.0 Ice Cream Sandwich. Specs include a 1.2GHz dual-core processor, 1GB of RAM, 16/32GB of internal storage, a 4.65 inch 720p HD Super AMOLED... Read More



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