Battery drainage - Nexus 7 (2013) Q&A

Battery started draining alot randomly... any ideas? Stock rooted 4.4
Android os has like 10hrs keep awake in one day
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Have you checked apps and sync settings for anything waking the device? Sometimes just a reboot can fix it.
prshosting.org

Are you on ART and using another user account?

stealthj said:
Battery started draining alot randomly... any ideas? Stock rooted 4.4
Android os has like 10hrs keep awake in one day
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Click to collapse
Yes no apps are doing anything
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prsterero said:
Have you checked apps and sync settings for anything waking the device? Sometimes just a reboot can fix it.
prshosting.org
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Click to collapse
I'm on art but not using another account
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stealthj said:
I'm on art but not using another account
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Sorry I meant if you're on ART do you have another user account?

I do have a first account, unused really with nothing running,... better battery stats shows me those services running, is that normal?
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stealthj said:
I do have a first account, unused really with nothing running,... better battery stats shows me those services running, is that normal?
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Reason I asked is because I have two user accounts and I had the same problem as you on ART.
For me it was Google Search was the culprit in my second account, even when I'm logged in my first and my N7.2 goes to sleep.
First account no problems whatsoever.
So revert to Dalvik. Everything is back to normal now. Besides on ART I lost quite a substantial amount of storage just for that slight increase in speed which I don't find necessary.

Fully charged again. Will switch back to dalvik and see what happens...
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stealthj said:
Fully charged again. Will switch back to dalvik and see what happens...
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Nope, still have bad drainage after switching to Dalvik runtime! Any ideas?
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stealthj said:
Nope, still have bad drainage after switching to Dalvik runtime! Any ideas?
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Click to collapse
Wait till Google fixes it. It's a rather common issue.

Pfeffernuss said:
Wait till Google fixes it. It's a rather common issue.
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Click to collapse
But it just started happening. Never happened in the past 4 months
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I just fastbooted the whole 4.4 stock image and rooted again, loosing all data and stuff but seems like it fixed the issue. Couldn't figure the problem out anyway... at first I Judt fastbooted the system image hoping that would do something but it didn't
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Related

Android OS stays awake and kills my battery

So I have unbricked my phone and have flashed cm9 and fullthrottle now I'm on the official ics from att. My phone has been dying quickly. I checked my battery stats and seen android OS in my number 2 spot. Today I unplugged my phone and didn't use it for two hrs and it went down 5% I checked and android os stayed away 1 hr and 53 mins.
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This is the screen shot after having it on for 8 hrs and I was at work and I only used a couple times
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Same thing on my end. LG really screwed this up.
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You need to install the better battery stats app and see which app is giving you wake locks.
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Malnilion said:
You need to install the better battery stats app and see which app is giving you wake locks.
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Click to collapse
Yep, install better battery stat, it's even free for XDA member, search the app forum.
kenship said:
Yep, install better battery stat, it's even free for XDA member, search the app forum.
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Click to collapse
Also, there's a thread called "known identified battery drainers" in the ATT GS2/I777 forums that has some good, universal stuff on interpreting wakelocks.
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any luck solving this?
I tried flashing this from 3 times wiping everything and still get the android os taking most of my battery. I tried better battery stats but can really interpret it. I don't have facebook link or instagram. I'll post pics of better battery stats.
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miguellopez12 said:
I tried flashing this from 3 times wiping everything and still get the android os taking most of my battery. I tried better battery stats but can really interpret it. I don't have facebook link or instagram. I'll post pics of better battery stats.
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Did you flash through CWM or using LG's official tool from a computer?
O flashed through CWM
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miguellopez12 said:
O flashed through CWM
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I'd suggest disabling stock apps you don't need, I guess. Most people seem to think the battery life on that ROM is decent.
I always disable the att apps that come with the stock from. I get about 10 hrs on medium use with the extended battery. If this was fixed then I would get way more
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same issue
I never even thought to check into that as I have also had bad battery life, but figured it was just the nitro. New to rooting LG's as I had samsungs before. I am having the same exact issue running OH!NO! Full Throttle 7.1 and never realized it.. Is it just settings that are not allowing it to sleep?
I have no clue but there is something that is keeping the phone awake and not letting gp to sleep which is really hurting the battery life
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i definitely recommend getting juice defender. it made a HUGE difference in my battery life.
I tried it but it didn't help much just turned off the data. The only thing that really helped was to go into app settings and disable android and it has helped some
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I have the same issue. Android OS is (or was) the best battery killer. AT&T support person told me to do factory reset AND DO NOT INSTALL any app that are not preinstalled. I have to install them later one by one to find one incompatible with ICS.
After reset operation (happened 2 hours before) I have now Screen as the best battery killer Battery went from 77% down to 62% with some browsing and preinstalled apps update. It looks promising...

AudioOut wakelock question

Hi I have note 2 which is fantastic and I am very pleased with it. So far I was getting perfect battery life but lately it doesn't last that long so I installed BBS and this audioOut wakelock is preventing my phone from sleeping. Is there a chance to find which program is keeping this wakelock? I searched the web and there is Nino help. It is almost always on silent and I am not using it to listen to the music. Thanks
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I've seen all kinds of "fixes" here - e.g. switch ringtones and reboot, turn off all system sounds, use Task Manager to turn off everything and many more.
Not one has worked for me on any ROM with any kernel, which makes me suspect that it's a rogue app. It never takes me a long time to realise that I cannot be bothered trying to track down the responsible app, so I live with it. YMMV. Viber has been mentioned frequently (never had it myself).
Sounds very similar to the Media drain problem. Similar alleged reasons, similar useless solutions, even poor Viber is also wrongfully scapegoated. What kills me is once the problem start it remains no matter what the heck you do, even if you wipe, root, change roms, format, remove/change sd card, etc... Nothing short of a hammer will solve the ****ing problem.
Download advanced task killer and set it to kill all apps at screen off. Also configure greenify to greenify all apps.
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delete viber and reboot and you'll be good
Yes I have Viber but I can't see it is running in background... Sometimes I am not accessing gallery or any media files for days and that wakelock is on.. and it goes as our comes.. And I just started to brag about its fantastic battery life...
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yahyoh said:
delete viber and reboot and you'll be good
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Click to collapse
Is the correct answer. Don't mess about guys just delete viber and then tell us how it worked.
defenderko said:
Yes I have Viber but I can't see it is running in background... Sometimes I am not accessing gallery or any media files for days and that wakelock is on.. and it goes as our comes.. And I just started to brag about its fantastic battery life...
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Click to expand...
Click to collapse
its running dude and its the problem
it happened on my S2 and on my Note 2
its really crappy coded app
Got this official respond from Viber:
Thanks for contacting us and sorry for the inconvenience.
This is a known issue which affect some devices. We are presently working on the solution. you can expect an update on version 3.
Please make sure you stay current with our version updates.
at: http://support.viber.com
We kindly thank you for your patience.
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I disabled samsung tts in applications and the audio out 2 stopped draining my batter and deep sleeps also happened after that. Try It and let me know
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What is samsung tts? I found it but what does it do?
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defenderko said:
What is samsung tts? I found it but what does it do?
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It's text to speech.
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harshcoolz said:
I disabled samsung tts in applications and the audio out 2 stopped draining my batter and deep sleeps also happened after that. Try It and let me know
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Didn't help
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Disabled tts, but no joy.. It stayed awake all night!
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Ffs I am saying since so long. You just need to configure advanced task killer and greenify. But no. We want some other kinda solution.
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UtkarshGupta said:
Ffs I am saying since so long. You just need to configure advanced task killer and greenify. But no. We want some other kinda solution.
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My phone is not yet rooted,so I can't use greenify . I don't want to root it yet because there is no safe way ti delete the counter..
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defenderko said:
My phone is not yet rooted,so I can't use greenify . I don't want to root it yet because there is no safe way ti delete the counter..
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Jig. Anyways I think advanced task killer would be sufficient.
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I have the same wakelock on top of the list,but maybe is normal because i`m with tunein 9 hours a day?
Update on the subject! Deleted Giber , wahtsup,all the games, everything that could emit sound and that wakelock is still on 90% of the time.. grrr. I am going to change the ron these days..
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Task killer didn't helped!
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Google services has high battery usage

Lately my phone has been showing google services as second highest battery drain after the screen. What could the likely cause be, or how can I find out?
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Shad0wguy said:
Lately my phone has been showing google services as second highest battery drain after the screen. What could the likely cause be, or how can I find out?
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Click to collapse
Use better battery stats app ...it will let u know what's going on. I too have had that prob tho. Also try getting a GPS lock .and then unlock it. What ROM u using ? If it was android system or android os. I've had reflash ROM usually.... Google services mite jus be a quick fix.
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matthew0776 said:
Use better battery stats app ...it will let u know what's going on. I too have had that prob tho. Also try getting a GPS lock .and then unlock it. What ROM u using ? If it was android system or android os. I've had reflash ROM usually.... Google services mite jus be a quick fix.
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Click to collapse
I'm using atom v10. I'll check out the better battery stats app like you suggested.
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Shad0wguy said:
I'm using atom v10. I'll check out the better battery stats app like you suggested.
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Click to collapse
I have noticed wit vanir ROMs I do have to get that first GPS lock for Google services to sleep correctly ...
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Hmm... i remember having Google services eating more batt. than screen.. i let my phone die then charged it up full didn't have the problem again :-S

[Q] Lockscreen & Gallery

How fix lag on this? Lockscreen maybe its ok.. but gallery.. big lag..
I have this update..
http://forum.xda-developers.com/showthread.php?t=2387423
4.3
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More info??
androidBH said:
How fix lag on this? Lockscreen maybe its ok.. but gallery.. big lag..
I have this update..
http://forum.xda-developers.com/showthread.php?t=2387423
4.3
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Click to expand...
Click to collapse
Are you on a custom rom or stock rom? If you are on a stock rom make sure you have S Voice disabled as its a major source of lag.
I am having the same issue with both. Even tried full data wipe and restore.
I'm totally stock, no root. Major lag when opening gallery and unlocking phone.
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Stock rom
S voice is turned off
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Seems like a bug within the update. Also go to settings>applications>and look to see what app is taking up valuable ram.
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Nothing..
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It seems to only affect the gallery and wake screen.
Also, after doing a full wipe, I am now getting lockups while using some apps, YouTube, I funny, and while messaging. The screen will freeze, then after about,, 30 seconds it will reboot.
Again, I'm all stock
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Also major battery drain issues. When my phone hits 18% power, just the phone at idle will die in less than 30 mins.
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Something is consuming power
Jonny Steele said:
Also major battery drain issues. When my phone hits 18% power, just the phone at idle will die in less than 30 mins.
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Click to collapse
Yep some app or process is using up your resources. Mind posting a screenshot of your applications??
I
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Jonny Steele said:
I
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Click to expand...
Click to collapse
You can try flashing, cyanogenmod 10.2 stable d2att on your phone and make sure you wipe your phone clean first before installing. This rom is definitely a battery saver on my phone. No lags whatsoever.
I'm wanting to keep the phone stock. Just curious if there was an app bogging it down or something like that.
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I am delete gallery3D and install QuickPic on google play..
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[Q] Google Search Batter Drain

Hey guys, so this is the 2nd charge cycle that this is happening. Google Search drained more than 50% of the battery even on airplane mode. Says it kept the device awake for 1 day 6 hours. I rebooted the device twice. This last time I rebooted it and it doesn't seem to be keeping it awake but the battery was still draining fairly quickly. I'm going to do a full recharge and another reboot. But has anyone else been encountering this? Usually a reboot solves it but I guess this time it didn't.
Using app like Dư Battery or Greenify to identify which app is using your battery most, you'all have the answer.
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jonidontcry said:
Using app like Dư Battery or Greenify to identify which app is using your battery most, you'all have the answer.
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Click to collapse
I know Greenify requires root right? Is it the same for Du Battery?
PsychDrummer said:
I know Greenify requires root right? Is it the same for Du Battery?
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Click to collapse
Greenify requires root but DU battery doesn't.
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Do you have Google experience launcher installed?
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stealthj said:
Do you have Google experience launcher installed?
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I don't think so. I thought that was only available for the Nexus 5. I use Nova.
Same Problem here since a day or 2. I have installed newest experience launcher. Is this causing problems??
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On the experience launcher, need to to to google now settings and disable hotword. That's the thing where u can say "ok google". It's always listening to you. Since we don't have that extra processor, it is keeping the device awake...
But for the OP, what is it that is using the battery? Google framework? Android os?
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---------- Post added at 11:47 AM ---------- Previous post was at 11:45 AM ----------
For google search, try to force stop and clear data and see if that does anything
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