Hey, I was wondering if anyone else was having a problem with sub par battery life. I have not been satisfied with my G2 battery life, I only get about 12-13 hours and I am not a really heavy user. I have disabled wifi, bluetooth, gps, cell location, and syncing for everything but my gmail and exchange (set to push), and it didnt affect my battery life at all.
I noticed that "Android System" was taking up 35% of my battery, which I am pretty sure is not normal, so I decided to try a different battery monitoring app to get more details. I downloaded PowerTutor and it was showing that Facebook was using a LOT of battery life over the period of about 10 minutes, which was strange considering that I had turned off all notifications, turned off the refresh, and turned off syncing. It shouldn't have been doing anything.
I logged out of the facebook app and it no longer seemed to be doing anything. My facebook version is 1.3.2. Hopefully this will give me some better battery life (right now i am at 24% at 3:00pm after unplugging at 6:30am, but PowerTutor ate a good bit of battery life while it was monitoring)
Just thought I would post for people who might have abnormally low battery life, and see if anyone else had the same problem.
The facebook app is terrible anyways, I won't miss it. I just use a shortcut on my home screen to m.facebook.com
I'll post back tomorrow and see if my battery life has improved.
i get 12-13 hours, moderate use... but i do have facebook refreshing hour... I had no idea it was eating battery while sitting idle though :-\ that's something for me to look into
I also didn't know 12-13 hours was considered low (new to Android)
Thanks for the heads up
I've been doing a little digging on the Adroid System battery drain issues over here: http://forum.xda-developers.com/showthread.php?t=801244. I don't use the Facebook app at all, but I have noticed a Facebook still periodically pops up in logcat. If I get around to it I'll login to the Facebook app and enable updating to see how often it show up then.
Get the currentwidget app and put it up as a widget at the home screen (I come from WM 6.5.5). Set it up using the default setting. Click the power button and let it sleep. Wake it up in 4 minutes and check your Ma shown in the widget. I'm getting 35Ma and my battery seems to be doing fine.
Its tells you how much power is being used by your phone when it sleeps. Also remove any task killer on your phone. You don't need it.
My battery has also been draining pretty fast. Android system says its using 45% percent of the battery. Don't know what to do?
Sent from my T-Mobile G2 using XDA App
I just did some more testing with PowerTutor. The e-mail app (not gmail) is using up TONS of power when my phone is locked. I think it may have to do something with Exchange and ActiveSync. It's a hotmail address that I'm synced to. I guess I'm going to forward it to a gmail account or something. Its sapping battery life with both Push settings and Every 10 Minute settings.
lol. app dev for facebook hates ios and android. though the fb for android does suck(doesn't have half the things ios version has) but its still better then nothing. fb app is pretty buggy so not surprised that it would take up so much juice.
You could also use watchdog and kill Facebook if it's the culprite. It will also tell you if something else is to blame.
Sent from my GT-I9000M using XDA App
I think that Facebook is the culprit. At least for me it was. I was sitting at android system using ~35% and once I logged out of the Facebook app I checked back about 5 or so hours later and it went down to 12% or so.
But i like that FB app only thing I disliked was getting sent to the web when checking notifications. Maybe social scope will alleviate that
It's looking to me that Facebook was using a decent chunk of battery. Android system is down to 19% for me today after signing out of facebook. I've been listening to music all morning too so thats probably why its still high-ish.
When I get home from work I'm going to monitor my battery again and see if the e-mail app is still using up battery.
If someone else has logged out of facebook and saw battery usage go down, then I think it is safe to say that the app is buggy.
wow... so are you telling me my battery life will go from 12+ hours to 16-17 if i log out of facebook? YOWZERS
When I posted this thread yesterday I was at 24% at 3pm. Right now, at 1pm after logging out of facebook last night and unplugging this morning at the exact same time, my battery is at 68%. I have been listening to music all morning too, browsing the web periodically, and I got a few short phone calls. So unless my battery life tanks 40% in the next 2 hours, I think that being logged in to facebook definitely seems to be eating up battery on the G2.
My testing is hardly scientific, though. But I have had the phone unplugged for 6 hours and 40 minutes and im only down to 68%. Not bad at all.
Someone else should try testing a day logged in to facebook (with notifications, syncing, and refresh all off) and a day logged out of facebook.
edit: also, my Android System is down to 15%. much better.
What about the Twitter app?
And turning off background data won't stop Facebook from draining battery?
joebobjoe said:
What about the Twitter app?
And turning off background data won't stop Facebook from draining battery?
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I'm not sure, I don't use twitter. And I haven't tried turning off background data, I'm trying to narrow down my battery issues to an application specific level. I'd rather turn off facebook for being a battery hog than turn off all of my background data.
pmstc said:
Someone else should try testing a day logged in to facebook (with notifications, syncing, and refresh all off) and a day logged out of facebook.
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Am testing that one out. However, I have just the syncing on but I don't think that syncs constantly. We'll see how my phone fares with that setting I have now with notifications and refresh both being off but still logged on the Facebook app. My phone averages around 10-12 hours per charge even with using Trillian and AndChat and quite a copious amount of texting during the event hours. I changed the Facebook settings last night. We'll see how the day goes with the battery.
For me, just turning off notifications and refresh didn't help battery life. I had everything turned off and it was still draining battery (what it was doing? I have no clue... shouldn't have been doing anything.. I think the application has a bug)
Loged off Fb and twitter and the battery lasted all day no problems! Also turned off GPS seeing as I rarley use google maps and now very happy with my G2 batt. Thx!
fRom Snugs G2 ^.^
Snuggl3s said:
Loged off Fb and twitter and the battery lasted all day no problems! Also turned off GPS seeing as I rarley use google maps and now very happy with my G2 batt. Thx!
fRom Snugs G2 ^.^
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Me too. Getting great battery life now!
I know this issue has been posted in forums for other devices, but I haven't seen anything about it for NC. I did try to search the NC forums but couldn't find anything that seemed to address this problem.
I am using MIUI 1.7.22. I have noticed significant battery drain due to Android OS (in battery stats), suspend (in the systempanel app), and event/o (also in systempanel). I have disabled auto-sync and any apps that appear to be likely culprits (those that might attempt to download data). This problem seems to appear with wifi on or off, and when on, I have tried both setting it to never turn off and to turn off when the screen is off. Initially I was experiencing battery drain due to cell standby, which I took care of by disabling the telephony provider, phone, and mms apks. I know many don't believe this has an effect, but I did it anyway. The cell standby drain is gone, but now I'm fighting the drain due to these other factors. Has anyone found a fix for this?
After scouting around for info, I have tried some suggestions seen elsewhere: rebooting and wiping dalvik cache. So far today I haven't had any Android OS, etc. issues. Standby life with screen off is as it should be (for now and hopefully forever)--very slow battery drain.
This is with wifi set to never shut off, which I prefer.
Suspend etc. came back last night although not as extreme as before. Hopefully some other folks will have things to add to this thread. I will continue posting progress info as I learn more about this.
From the code.google.com forums:
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%).
I will try this and report back.
Disabling WIFI and GPS in location/security had no effect. There appears to be a google process that prevents the system from sleeping.
I was still experiencing random battery drain due to Android OS, suspend, event/0 after switching to cm7. One suggestion I read was to disable calendar sync, as this appears to be a runaway process that attempts to connect to the server constantly without allowing the device to sleep. Doing this allowed me to get through the night with very little drain and the Android OS, etc. processes were finally behaving (within normal limits).
I'm not sure if anyone is reading this thread but I will continue to update until I figure out the solution, as I imagine this problem will become more noticeable to others who are equally frustrated with this issue.
Having same problems on my galaxy s2. Lots of people have this problem and think it's a problem with the os. What os version are you using?
memphisuklf said:
Having same problems on my galaxy s2. Lots of people have this problem and think it's a problem with the os. What os version are you using?
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Right now I'm using cm7 (2.3.5) but I was using MIUI before. Turning off calendar sync has worked well so far.
I had bad battery drain in the past and no deep sleep. but what worked for me was not to use any live wall paper. this fixed my deep sleep issues. for the battery drain, re-set your battery stats and re boot a couple of times for the stats to settle down. also check google map and latitude. in latitude just log out. un-checking sync in my yahoo email app also helped with my battery drain. my wifi is set at, off with screen. I went from 20 -30% drain in 7hrs to now 1-3% in 7hrs
I hope any of this info can help
cm7 n146
Thank you, boxcar. I had tried all of those things (froze live wallpaper, reset battery stats, reboot, froze maps and latitude) but the only thing that worked for me was unchecking the box for calendar sync. Email sync and wifi appear to be non-issues--no difference between off or on. Evidently this google calendar sync bug is a known issue (that very few people seem to know about!). I hope google will fix this soon.
I also have same problem on my Galaxy S2. These two(events/0, suspend) drain many battery, 14% one night, without WIFI, GPS, Bluetooth.
I'll keep on tracing this issue, and share the result in this thread.
arrowliu123 said:
I also have same problem on my Galaxy S2. These two(events/0, suspend) drain many battery, 14% one night, without WIFI, GPS, Bluetooth.
I'll keep on tracing this issue, and share the result in this thread.
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Turning off autosync seems to help the most (although setting WIFI to turn off when the screen turns off appears to help, as well). I tried using an autosync toggle but just turning it on at all seemed to result in a gradual creeping up of the Android OS, etc. problems. Manual sync of calendar and perhaps gmail and contacts seems to be the way to go. For some reason, exchange mail set to push results in no problems. The other trick I've found is to go to applications, then calendar and calendar storage, and force stop, delete cache, and THEN manual sync of calendar (reboot, recovery, wipe dalvik, fix permissions are good ideas, too). When I flash nightlies, I go through this process and the offending processes work as they should. If I don't, problems appear sooner or later.
I've had my nook on for 9 hours now, WIFI on (off with screen off) and 30 minutes of display on time. I've lost 9%, so I think I'm on the right track. This is how it should work, I.think. Of course, the results SHOULD be the same with autosync on, but manual sync for good battery life is an acceptable small tradeoff in my opinion.
Sincitybronze said:
I've had my nook on for 9 hours now, WIFI on (off with screen off) and 30 minutes of display on time. I've lost 9%, so I think I'm on the right track. This is how it should work, I.think. Of course, the results SHOULD be the same with autosync on, but manual sync for good battery life is an acceptable small tradeoff in my opinion.
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For the noobs in the audience, how exactly does one turn off autosync? Where is it located?
Thanks in advance.
Puddynose said:
For the noobs in the audience, how exactly does one turn off autosync? Where is it located?
Thanks in advance.
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Menu, settings, accounts and sync (I leave background data checked).
I found part of the root cause, maybe some old application - can work on new version, but drain many battery. Today I uninstalled the 'Android photo widget', then only 1% battery has been drained within 2 hours when standby. Not totally solved the issue, but seems OK.
I guess you can also try this, find another 'bad' application which drains your battery.
Well guys, I'm not sure if I'm the last Nook Color user to continue fighting with this super annoying headache (I know SGS2 users are, too), but I think I'm on to something. I thought calendar sync was the culprit (and perhaps it was), but the Android OS drain (featuring nemeses suspend and event/0) would not go away and the arrival of this problem continued to be (apparently) random. I had an idea that, if the calendar sync kept alternating between suspend and event/0, perhaps this was due to old events that caused the sync process to continue longer than it would normally. So, based on this idea and logic, I changed my exchange e-mail account settings to sync email from the last month rather than to sync all mail. Looking at my work e-mail history, I realized I had e-mails in various folders and sent mail from as far back as 2001! Although it's nice to be able to access all e-mail history, perhaps the polling services were constantly monitoring the activity of super old emails and folders, which caused the suspend and event/0 processes to flip out. I don't know if this is the way Android actually works but it seemed logical to me. Well, for the last 24 hours, I have intermittently checked my cpu activity through systempanel, and what do you know, when the device is not being used, suspend and event/0 work as they are supposed to and Android OS stays low in the battery % list. PLEASE let this be the fix! I know there are other factors that contribute to the acting out of these processes, but on a stripped down device with no autosync or widgets and no out of control services identified in systempanel or watchdog, there can't be many other explanations. I'm curious if others with this problem have similar settings on their email accounts. In all the forums on different sites (and I've read a ton of them), I've never seen anything like this mentioned.
http://code.google.com/p/android/is...c=ID Type Status Owner Summary Stars&id=16721
Please vote there, and, may be, Google will fix it.
For those still following this thread, here's a tip. Use Gemini app manager (in the market). This has been one of the best tools I've found for managing wakelock issues and battery drain during standby. It allows you to identify apps that start up on their own (more than you think) and prevent them from starting randomly. In my experience this has been a huge cause of the standby drain problem showing up as Android OS, suspend, and event/0 in battery monitors. I'm currently sitting on 81% battery remaining with over 1 hour of screen time after 21 hours since my last charge. I know it's not a lot of usage but it's the standby time that's fantastic.
boxcar8028 said:
I had bad battery drain in the past and no deep sleep. but what worked for me was not to use any live wall paper. this fixed my deep sleep issues. for the battery drain, re-set your battery stats and re boot a couple of times for the stats to settle down. also check google map and latitude. in latitude just log out. un-checking sync in my yahoo email app also helped with my battery drain. my wifi is set at, off with screen. I went from 20 -30% drain in 7hrs to now 1-3% in 7hrs
I hope any of this info can help
cm7 n146
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Click to collapse
I've a Galaxy S2. Tried everything, except disable autosync. Was losing 30-40% battery at night. So far since turning off google sync I'm getting about <1% battery use an hour. Will see if it continues. Thanks.
Recently been getting battery drain while on Idle. This drain I tend to notice at night. My phone can idle duriing the day but does not drain battery.
I recently disabled Android system IQ agent .. and it seems to have helped at night after rebooting and stopping that service.
I also noticed when you go to task manager and go to settings there is an option to stop services. I checked Facebook (51 services wth). Google Play Books , Magazines, and Movies\TV. I also checked Google play services (65 services).
Believe it or not my phone seems to be running fine and my battery life is a lot better.
Now I set my brightness at 47% (not auto), Google Now is enabled with Wifi and mobile location. Google backup is enabled (most are unchecked including app data) Email is manual sync.
Just thought I"d pass this along. YMMV.
Thanks for your tips. I noticed random battery drain these few days, no idea what it is, high battery drain when idle, and it happens randomly. Will try and report back. Thanks
smallgreenbear said:
Thanks for your tips. I noticed random battery drain these few days, no idea what it is, high battery drain when idle, and it happens randomly. Will try and report back. Thanks
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What's the exact name of the apk / the service? Afaik I do not have any matching process so far...
The process checkin service is draining my battery, I have flashed the stock rom a lot of times and it is still draining my battery
I have the same problem. Any solutions?
Sent from my iPad using Tapatalk
Check your google account sync under account options, maybe there is a problem that android is trying to sync something and is getting error?
i had the same problem. i just stopped using smart lock (settings/security) and problem gone. other than that i would suggest a clean install if you don't find the cause
P.S. around the same time i flashed a kernel but i don't think that is relevant with the drain
i have similar problem, but battery drain comes from exchange services. it is on top of battery usage, a bit strange because i dont turn on auto sync
anyone facing the same problem?