Develop Bugs

Battery is dying at fast rate

For the past 3 days my battery is dropping at an incredibly fast rate. Even if its idle it will drop about 20 % every half hour with little to no use. I rooted my phone and am now running fresh with kings kernel but no change. I an even dropping in airplane mode. What can it be? I left it at 90% connected to wifi with the sync off and when I woke up 6 hours later it was at 20%. Any solutions?

Sounds like mine, just turning on the screen drops the batter 1-2%.

Hit menu and click on settings. From there, go to About Phone and then to Battery. Note the awake time and turn the screen off for thirty seconds or so. Turn the screen back on and check the awake time again. If it's not within five to ten seconds of the time you noted before you turned the screen off, something is keeping your phone awake, which does a number on the battery.

square parts or system panel might give a better idea of what specifically is draining your battery, or preventing it from sleeping correctly.

It seems fine, about 15 seconds difference. The weird thing is this only started happening about 3 days ago, I rooted yesterday, and its still doing it.

Go for what Fachadick said. Download and install Spare Parts from the Android Market. Go to Battery History and click on the dropdown box where it says "other usage" and click on "partial wake usage". If anything is taking up one of those bars, that's your problem.
If there's nothing notable there, it could be damn near any of your applications. When you root, you lose settings for you apps (depending on how you rooted), so your autosyncs could be going crazy. Might wanna check those.

TheMagicalSock said:
Go for what Fachadick said. Download and install Spare Parts from the Android Market. Go to Battery History and click on the dropdown box where it says "other usage" and click on "partial wake usage". If anything is taking up one of those bars, that's your problem.
If there's nothing notable there, it could be damn near any of your applications. When you root, you lose settings for you apps (depending on how you rooted), so your autosyncs could be going crazy. Might wanna check those.
Click to expand...
Click to collapse
What he said Rooting won't fix battery issues. Rooting and installing a new ROM is just like reinstalling your OS. It can fix things or not depending on how it is configured. Likewise it won't fix your phone if hardware is bad.
does it drop steadily or just the first 5-10% or so? There is a well documented issue where the trickle charge stops at 100% and then shuts off so the phone actually drains a bit before it kicks in again. When you first unplug it, the reading may drop quickly until it reaches the real level.
Likewise depending on what you have installed and how it is set up, there may be something keeping your phone from sleeping. Check for partial wake use like the previous poster said and that will tell you what process/application is keeping your phone awake and draining battery.

i had this same problem about the battery before i rooted my phone. after i rooted it i got overclock widget and i get through the day with so much more battery left. i make sure my battery is full right before i go to bed, i put it on airplane mode and go to bed wake up around 7 a.m.(my battery is always at 98 when i get up in the morning so 2% in about 8 hrs) and i get home around 8:30 and my battery is at 48%. and no i dont leave it lying around with the screen off. i constantly go on, text, internet etc.
hope it works for you too!
your friend.
Ninja25

I am having this same problem and it started about 2 days ago. I downloaded Spare parts and looked up the partial usage (screenshots attached). I'm not sure what I'm suppose to determine from this. Mail is showing with more fill-in than any other program, when I click on it, I get the details. Can someone help?
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trhonda2000 said:
I am having this same problem and it started about 2 days ago. I downloaded Spare parts and looked up the partial usage (screenshots attached). I'm not sure what I'm suppose to determine from this. Mail is showing with more fill-in than any other program, when I click on it, I get the details. Can someone help?
Click to expand...
Click to collapse
It doesn't appear (to me anyway) that you're having any issues with partial wake time. You may have a runaway app draining your battery and cpu - system panel is invaluable for hunting those down. It will show you each running process with exacly how much cpu it's used. It gets even better and gives evenmore detail if you let it monitor your system over time.

turn off latitude

kthejoker20 said:
turn off latitude
Click to expand...
Click to collapse
How did you get that from his screens? Not doubting you, but where do you see that?
Sent from my blah blah blah blah

Thanks for the help fachadick, where would I get "System Panel" from? Couldn't find in the market.
P.S. - I'm a lady LOL

trhonda2000 said:
Thanks for the help fachadick, where would I get "System Panel" from? Couldn't find in the market.
P.S. - I'm a lady LOL
Click to expand...
Click to collapse
There I go, letting my prejudices get ahead of me again, sorry about that. I think in the market it’s called systempanel – one word.

So will the free version pinpoint the problem, or would I need to do the paid version?

trhonda2000 said:
So will the free version pinpoint the problem, or would I need to do the paid version?
Click to expand...
Click to collapse
to be honest, I'm not sure - I don't remember what kind of detail it gives you in the free version, but the app is so useful to monitor cpu and battery, as well as for hunting down rougue apps, I would recommend the paid version as a "required" app for all rooters.
when you load it up, the default screen is essentially a taskkiller - but more importantly, you can go into settings and have it show ALL processes, and if you select one of the apps or processes from that main screen, it tells you when it was started, how much cpu it used, how much memory its used, and at least in the paid version, a historical graph of cpu usage - so you can see exactly when it used the cpu over the past 2 hours, 8 hours, 1 day, 3 days, or over the past week.

Me Too - "Android System" extremely high - Stock 2.2
This is also happening to me from 4 days ago. I haven't installed any new apps in the last 15 days or so, and for good measure, i uninstalled the last 10 apps i installed before that. When i check battery usage, the "Android System" takes up between 60 and 70 percent. When i open it, it lists like this:
HTC Checkin Service
Settings
Upgrade Setup
Rosie Utility
Android System
Setup
Accounts & Sync
HTC Widget Download Manager
VPN Services
Network Location
com.android.qxdmlog
BrcmBluetoothServices
Settings Storage
Click to expand...
Click to collapse
Bluetooth is off, 4g is off (when's cincinnati going live already!??! Just the heart of downtown and the mall)
Wifi is off, and I've been turning off gps now, but i always used to leave it on and made it through the day.
"Cell Standby" is next with 8%, everything else below that.
I kill everything with task manager now and it doesn't seem to help at all.
It is not possible to exaggerate how fast the battery is being drained. It drops by 1-2% each 45 seconds or so. I've done the Charge-for-8-hours-turn-off-charge-trickle-charge-unplug-trickle-charge-unplug-etc thing last night and no help. This is with no widgets installed, no live wallpaper, no music, when for months i can make it through the day with a little pandora, bluetooth while driving, a game or two, internet, maps, and several other apps throughout the day. I've stopped everything but messaging and phone calls and it still drains just as fast.
PLEASE HELP!

I don't know if this applies to anyone in this thread, but after installing a new rom sometimes I forget that the Gtalk/Gchat app resets itself to automatically sign in, and drains the battery while running in the background.
Changing it to not run automatically helps out for me, although I feel that I may have gotten slightly better battery life out of the rooted stock rom than running the King kernel I'm using right now. At least in terms of percentage drop. I never really reset my battery stats or recalibrate after installing a new rom, don't know how much that has an effect on the readings.

This is turning into a deal breaker
Its not latitude, off. Not ANYTHING as it still happens with everything off and all apps killed in task manager.
No background, no live wallpaper (even though i used to have one all day). No music (even though i used to have pandora on a couple hours a day). screen brightness is always low (even though i used to leave it above medium, and would turn it up to high to watch video or a game, and still made it most of the day before).
The phone's battery use thing swears its "Android System" thats taking by far the most, not even cell standby got larger when i unplugged it in the basement where there's no service.
i've turned off everything i could think of, no apps 'auto update' and i've put all syncing and updating and stuff to manual or off that i could find.
I don't think its a faulty battery because it is ridiculously noticeable that something has changed in that ANDROID SYSTEM is now a power hog. Why and what do to?????

wlpywd said:
Its not latitude, off. Not ANYTHING as it still happens with everything off and all apps killed in task manager.
No background, no live wallpaper (even though i used to have one all day). No music (even though i used to have pandora on a couple hours a day). screen brightness is always low (even though i used to leave it above medium, and would turn it up to high to watch video or a game, and still made it most of the day before).
The phone's battery use thing swears its "Android System" thats taking by far the most, not even cell standby got larger when i unplugged it in the basement where there's no service.
i've turned off everything i could think of, no apps 'auto update' and i've put all syncing and updating and stuff to manual or off that i could find.
I don't think its a faulty battery because it is ridiculously noticeable that something has changed in that ANDROID SYSTEM is now a power hog. Why and what do to?????
Click to expand...
Click to collapse
Have you pulled the battery lately? Give that a shot.

"Android OS" consuming battery [POTENTIAL SOLUTION]

EDIT
I was able to solve my battery issue by formatting my SD card. Something on there was causing the battery to drain 2-3 times more quickly than normal. After formatting, I went from 6-8 hour battery life to around 20 hours with significant usage (Google, Exchange, IMAP, Facebook all on push, 3G+Bluetooth+GPS on, 4G and wifi as needed for extra speed).
Important to note, I am not entirely convinced that the Android OS and battery drain are related since I still have Android OS near if not at the top of my battery consumption screen, but the improved actual longevity is very significant. I recommend anyone having their battery run out format their SD card (and possibly USB storage) and see if that helps (obviously back up any important data first!). Good luck!
ORIGINAL POST
I'm getting pretty bad battery life, and it looks like "Android OS" is consuming most of it. I've rebooted (as suggested in other threads), checked OS Monitor for high-CPU usage processes, but nothing stands out. This is un-rooted, stock OS with no third party launchers installed.
I have a feeling if this issue was fixed, I'd be getting great battery life. This happening to anyone else?
Screenshots show the device at 38% after 6.5 hours off the charger.
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if u using a 2.3.3 based rom is normal, that bug is fixed at 2.3.4 and 2.3.5
Sent from my GT-I9000 using Tapatalk

Dfolt said:
if u using a 2.3.3 based rom is normal, that bug is fixed at 2.3.4 and 2.3.5
Click to expand...
Click to collapse
xak944 said:
This is un-rooted, stock OS with no third party launchers installed.
Click to expand...
Click to collapse
My device is running 2.3.4.

That's an awful lot of awake time with no screen on time. Do you have things updating in the background frequently? I.e. social hub, Facebook, news widgets?
And not to be too obvious, but is your 4g antenna turned on?
Sent from my SPH-D710 using XDA App

MoMatt said:
That's an awful lot of awake time with no screen on time. Do you have things updating in the background frequently? I.e. social hub, Facebook, news widgets?
Click to expand...
Click to collapse
No, I don't. I have fewer widgets and fewer accounts (haven't set up my work Exchange yet) than I previously had on my EVO, which got great battery life.
I've been on Android over a year and am quite familiar with how it works... I'm just unfamiliar with Samsung specifically and unrooted devices and was hoping someone might have a similar experience.

I have the same thing. Significantly more awake time then screen on time, and Android OS eating the battery. Also stock.

Same here too

I had this exact issue and no longer do. Here is what I did and posted in another thread:
OK I hope someone finds this useful and/or can verify. I was one of those people getting awful battery life, meaning lucky to last 8 hours from 100% to 0%. The "Android OS" process would take hours of CPU time. Now it will take up maybe 30 min over the course of the day. Here is the only thing I did between the time it went from bad to good. I changed the wifi sleep policy. It is by default (for me at least) set to never. I changed it to "when the screen turns off" and left it there for about an hour. Then went in and changed it back to never. From the point of doing this my battery life has been great.
I know it sounds strange but it seems to have worked for me so I thought I would share.

mjdoran said:
I had this exact issue and no longer do. Here is what I did and posted in another thread:
OK I hope someone finds this useful and/or can verify. I was one of those people getting awful battery life, meaning lucky to last 8 hours from 100% to 0%. The "Android OS" process would take hours of CPU time. Now it will take up maybe 30 min over the course of the day. Here is the only thing I did between the time it went from bad to good. I changed the wifi sleep policy. It is by default (for me at least) set to never. I changed it to "when the screen turns off" and left it there for about an hour. Then went in and changed it back to never. From the point of doing this my battery life has been great.
Click to expand...
Click to collapse
Thanks for the suggestion!
I made the change, hopefully it will help, although I'm reluctant since I haven't had wifi on all day and my battery has been dropping like a rock. Here's hoping... will report back if it helps.

xak944 said:
Thanks for the suggestion!
I made the change, hopefully it will help, although I'm reluctant since I haven't had wifi on all day and my battery has been dropping like a rock. Here's hoping... will report back if it helps.
Click to expand...
Click to collapse
I rarely use wifi as well but this setting seemed to affect the phone in general, if your using wifi or not. I might just be crazy though. Either way I no longer have the issue so

does the google voice widget pull data in the background or is it a push thing?

I'm seeing high usage (60+%) by AndroidOS also (stock, unrooted, not using WiFi, not using 4G), although battery life has not been bad that I have noticed.
Watchdog Lite indicates that this is primarily due to two processes:
events/0
suspend

mjdoran said:
I had this exact issue and no longer do. Here is what I did and posted in another thread:
OK I hope someone finds this useful and/or can verify. I was one of those people getting awful battery life, meaning lucky to last 8 hours from 100% to 0%. The "Android OS" process would take hours of CPU time. Now it will take up maybe 30 min over the course of the day. Here is the only thing I did between the time it went from bad to good. I changed the wifi sleep policy. It is by default (for me at least) set to never. I changed it to "when the screen turns off" and left it there for about an hour. Then went in and changed it back to never. From the point of doing this my battery life has been great.
I know it sounds strange but it seems to have worked for me so I thought I would share.
Click to expand...
Click to collapse
I'm having the exact same issue. Stupid question here (I've already tried to find it and googled it too, but no success.
Where do you change the wifi policy? I don't see it under wifi settings

limeaid said:
Where do you change the wifi policy? I don't see it under wifi settings
Click to expand...
Click to collapse
Wifi Settings > Menu > Advanced

limeaid said:
I'm having the exact same issue. Stupid question here (I've already tried to find it and googled it too, but no success.
Where do you change the wifi policy? I don't see it under wifi settings
Click to expand...
Click to collapse
Settings >> Wireless and Networks >> Wi-Fi settings
Then press the menu button and then advanced.
Should then be the first option "Wi-Fi sleep policy".

Thanks. Like everyone else, I'm going to try this out and report back after a day or so

I'm trying to get into the 'INFO' section to view wake locks for battery usage clues. I've tried *#INFO*1111# (as mentioned here) and the old *#*#INFO*#*# to no avail. Anyone been able to get to the diagnostic screen from the dialer?

Are people with battery problems using widgetlocker?

JoeBruin32 said:
Are people with battery problems using widgetlocker?
Click to expand...
Click to collapse
Interesting. I installed it yesterday. Will try removing it if the wifi setting doesn't work...
Is anyone with the "Android OS" battery drain not using widgetlocker?

xak944 said:
Interesting. I installed it yesterday. Will try removing it if the wifi setting doesn't work...
Is anyone with the "Android OS" battery drain not using widgetlocker?
Click to expand...
Click to collapse
I am not and was not using it.

Stock ICS - post-update issues, swype, battery, SU

I waited a LONG time for the stock ICS to be released. Three days ago, I finally had enough, updated to AOKP - so of course the very next day saw an Engadget article saying the ICS OTA update would be over the next few days. Since I was disappointed the AOKP doesn't offer the same Exchange account sync schedule options as stock (important to me due to my work), I flashed back to stock, rooted, no CWM, just stock recovery, and planned to wait out the stock ICS update.
Last night, I flashed the stock ICS update via QBKING77's link in the video:
http://www.engadget.com/2012/07/12/..._campaign=Feed:+weblogsinc/engadget+(Engadget)
I went to bed without playing with it much, it was late.
I woke up this morning, sent a few text messages and played with trying to get swype to work - in 20 minutes, used up 6% of my battery! 20 minutes later, not using my phone (I was on my computer searching here) another 5% of my battery used. In less than an hour, I was at 85%.
Looking at the Battery chart, I see my "mobile network signal" is staccato, interrupted black and green, green only 50-60% of the time. Not sure if this is contributing.
I have BetterBatteryStats installed. I work with little kids Saturday morning, then have a date, so I'll have quite a bit of time with my phone where it should be sleeping, so I should be able to build some stats - but any help is appreciated, I'm going to have to carry an extra battery with me at this rate.
I also can't get Swype working. I've seen comments like this:
RainMotorsports said:
Clear the data for swype, you lose the dictionary but it will work after that.
Click to expand...
Click to collapse
How is this supposed to be done?
I recalled the dictionary comment when reading last night, so cleared the dictionary from the Settings --> Language and Input --> Swype settings. That didn't resolve it. I'm noticing that many of the settings in this category are entirely unresponsive as well.
If I go into Swype from Settings--> Applications, the Clear Data button is greyed out.
Force Stop doesn't enable the button, Disable doesn't enable the button.
It also just continuously shows "computing" for the space stats.
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And I've lost 4% more as I've been typing this on my PC - phone not even on.
Another odd effect - I was rooted before updating (but again, no CWM, just stock recovery, rooted kernel), but of course am not rooted now. However, when I move around the phone, accessing certain things, I'm noticing the permissions popup box appears "[application] has been granted superuser access". Is this contributing? Should I uninstall superuser app? I just figured I would wait a day or two until a rooted FF18 kernel was available and then I'd be back as I was, rooted.
Any thoughts on these? I can't believe Samsung or Sprint would have released it this way... maybe others aren't experiencing these? I'm not seeing many threads with people complaining about them, and most people seem to be able to fix Swype like it's a simple fix - clear data, no prob.
Any help is appreciated, thanks.

I know I've seen it, but can't find it at the moment, but did you pull your sd card out when trying to clear data to avoid the computing issue?
And I know I saw a thread with a fix for it but is driving me crazy that I can't find it. :banghead:
Sent from my SPH-D710

After flashing anything. new, allow the battery to cycle a few times before expecting a clear reading.
Other than that, I'm unsure.
Mine works fine! settings all set to battery friendly. Auto brightness off set to low, no haptic or vibrating ever, no touchkey lights, etc.
FF18 SFHub Rooted

On the "computing" issue. Others have talked about it here.
Knew I saw it..
Sent from my SPH-D710

MoHoGalore said:
On the "computing" issue. Others have talked about it here.
Knew I saw it..
Sent from my SPH-D710
Click to expand...
Click to collapse
Awesome, that actually worked, for the Swype issue - it stopped "computing", and when it did the "clear data" button appeared.
I'll leave my SD card out for now (about 45 gig of music on it is all that's on there), we'll see if anything else changes or smooths out.
Sounds like it shouldn't be a problem when I put the SD card back in, either (fingers crossed)

mcadamry said:
After flashing anything. new, allow the battery to cycle a few times before expecting a clear reading.
Other than that, I'm unsure.
Mine works fine! settings all set to battery friendly. Auto brightness off set to low, no haptic or vibrating ever, no touchkey lights, etc.
FF18 SFHub Rooted
Click to expand...
Click to collapse
This seems more extreme than that.
I'll bring an extra battery with the car, if I run completely out we'll see what happens - but I'm wondering now if I swap the fully charged battery in, if that'll throw off the battery stats too. I never understood those battery stats.

I just tried to do a Better Battery Stats dump to file, but the file it produced is empty.
I thought it was going to be too big if anything, I checked all the boxes in "dumpfile settings".

I also had swype problems. It said failed to load english or something similar.
Clearing it help. thanks!

Well - it's about 7:30, I've had somewhat average use of my phone today, but I hit power saving mode (30% battery remaining) at 7pm, which is about 3-4 hours sooner than I usually do - and it's actually worse than that because I didn't unplug my phone from the charger this morning until about 11am - so that's about 2-3 hours later than I usually do.
Means I'm getting something like 6-7 less hours of battery life on this ROM.
I tried to generate a Better Battery Stats dumpfile but it looks like the text file was blank - anyone know how to do this?

geolemon said:
Well - it's about 7:30, I've had somewhat average use of my phone today, but I hit power saving mode (30% battery remaining) at 7pm, which is about 3-4 hours sooner than I usually do - and it's actually worse than that because I didn't unplug my phone from the charger this morning until about 11am - so that's about 2-3 hours later than I usually do.
Means I'm getting something like 6-7 less hours of battery life on this ROM.
I tried to generate a Better Battery Stats dumpfile but it looks like the text file was blank - anyone know how to do this?
Click to expand...
Click to collapse
I kinda expected this outta the 1st OTA to ICS... the few ICS ROMs I've used before this never gave me as good of battery life as stock GB did... I'm still on GB and I can get a full 18-20 hours out of it with what I consider to be pretty mod-heavy usage... Even though I expected it, it's till a let down .. unfortunately it prolly won't get much better until the Devs get a hold of it and tweak it out.. This whole crappy update situation is really turning me off android in general..

One thing I'm suspicious of is the new Sprint ID switcher thing. ..
The good: Open it. Switch from "Samsung" ID pack to "My ID" pack. Bam. Vanilla Ice Cream Sandwich launcher, no TouchWiz.
The bad: Download "Home Manager" app from Play market. Switch your ID's, and back. Observe both "Launcher" and "TWLauncher" are running. ...and if you had a third party launcher like I do (Go Launcher EX), you probably ALSO see that one "running", if you were using it.
You can use this app to kill the others, but it seems temporary. Having 2-3 launchers simultaneously seems like that could use a little more battery to me - and this is a built-in Samsung feature now.

Ics update battery fix
I found a way to greatly improve battery life after the update. Hold in the home button and a recent apps menu will pop up. Swipe apps to clear and android os battery consumption will drop to less that 35% mine was running at like 75% before i figured this out.

Correction its at 13% now. Much better than 75. Hope this helps
Sent from my SPH-D710 using xda app-developers app

Huge battery drain - Android Core Apps

Hi,
I'm curious if anyone else experienced the same battery drain caused by the Android Core Apps. I used to get at least 2 hours worth of screen time on my gnex, but now it's down to maybe 3/4 of an hour. Settings -> Battery shows Android Core Apps using about 40% of the battery. The phone gets hotter than usual when turned on. Sleep time doesn't seem to be affected.
I also noticed Contacts loading way slower than before with reloading each picture. I tried uninstalling HaxSync but it didn't fix the issue.
Phone is a yakju build with the official OTA JellyBean installed.
If anyone has any ideas I'd be thankful. I tried the usual phone reboot, taking out the battery...Didn't try hard reset yet since it's something I want to avoid at the moment.

This is funny cus lately i see the same thing.sometimes the cpu reaches 100 % because of it, especially the applications search provider process.i thought it was because of something i installed but now that you mention it too then it could he something else.maybe it's Google server issue or something? I'm still with ICS btw.
Sent from my Galaxy Nexus using xda app-developers app

That's exactly what happens. The phone heats up as well. Especially the right top corner of it.

Same here
I'm seeing the same thing here and I'm on JB on my GN. Have seen this for a couple of days now and android core apps is really eating all the battery just now. Even more than the screen
Any ides of how to proceed?

Samesiesz
:crying:

My phones batt life is also not as anywhere near as good as other peoples. I also use Yakju phone, and since JB, the top right corner of my phone gets super hot at times

It looks like we're all experiencing the same thing. So far nothing I've tried worked. Can you guys check if people (contacts) app takes longer to load the contacts than usual?
Sent from my Galaxy Nexus using Tapatalk 2

same here
i have the same problem..... it all happened after jellybeen. today it's hot as hell, and taking for ever to charge. i am going to wipe it clean and go from there.

Yes it's a problem. I try to keep my phone plugged in when I'm at my desk but sometimes I forget. When I forget the battery gets low I make sure these two items are close and fully charged.
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"lightbox_error": "The requested content cannot be loaded. Please try again later.",
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"lightbox_stop_slideshow": "Stop slideshow",
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Sent from my Galaxy Nexus using xda premium

I don't have "Android Core Apps" listed on my battery usage; I have "Android OS" and "Android System" but neither is a significant contributor toward the battery drain. My Contacts app also seems to load just fine.
Could you perhaps grab a screenshot of your Battery information page? Both the list of apps and the zoomed-in graph, please.
Another idea might be to try out an app like SystemPanel or Diagnosis to try and get a better idea of exactly which application is using up your juice.

Funny thing is that I didn't have Android Core Apps listed on my battery usage neither...at least not before this started happening. Somehow today seems fine though...nothing changed, nothing new installed or nothing old removed...just charged my phone overnight. It was going on for a week now, but today it's gone...I have a feeling it might come back randomly though. At the moment I'm seeing 84% left after 6 hrs off charger and moderate usage (about 30 mins screen time).
Contacts load considerably faster and phone doesn't get hot either...

roro45 said:
I'm seeing the same thing here and I'm on JB on my GN. Have seen this for a couple of days now and android core apps is really eating all the battery just now. Even more than the screen
Any ides of how to proceed?
Click to expand...
Click to collapse
Add me to the list. I also am seeing the heat up towards the top back.

I am having this issue as well.
Seems like opening the contacts is slow. Same with call logs.
The other thing I notice is when someone calls you, there is a delay before the caller name/pic shows up.
Update: I uninstalled Viber for Jelly Bean, everything is back to normal.

I have Viber installed as well, but it seems my issue has fixed itself even with viber still installed.
I'll check if maybe there was an update lately.
Sent from my Galaxy Nexus using Tapatalk 2

Try booting in safe mode. Long press the power off option
Sent from my Galaxy Nexus using xda premium

I think you cannot discuss allthis without referring to the kernels and roms in use.

Like I mentioned, I'm on stock JB - 4.1.1
Unlocked, but not rooted.
Sent from my Galaxy Nexus using Tapatalk 2

Well I have wiped out the phone and reset it. Seems to work better and the battery issue is gone.
Using stock on a bell network phone. Still need a bigger battery.
Sent from my Galaxy Nexus using Tapatalk 2

Same issue
The same exact problem here on my GNEX with JB (Android core apps eating up battery and contacts opening slow) . It seems to have started when I've installed the latest updated Viber App.
I've just unistalled it and will have a check on battery life from now on.

Uninstalled Viber
windmill_81 said:
The same exact problem here on my GNEX with JB (Android core apps eating up battery and contacts opening slow) . It seems to have started when I've installed the latest updated Viber App.
I've just unistalled it and will have a check on battery life from now on.
Click to expand...
Click to collapse
I uninstalled the latest version of Viber since it crashed on a regurarly basis and now my battery lasts a lot longer and Android core apps is not shown in the list of apps eating battery! Even my contact app loads a lot faster now.
Running JB on a stock GNEX.

[Q] Very poor battery life after 4.4.2 (Kitkat) update!

I just got the 4.4.2 KitKat update and now my battery life sucks!
My tablet was at 99% when I went to be last night and DID NOT USE it at all today, except when I tried to turn it on to read before bed time, the tablet shut off on its own because the battery went down to 1%!
Does anyone else have really poort battery life on their Samsung Galaxy Note 10.1 2014 Edition after getting the 4.4.2 KitKat update?
Is there anything we can do about this?
I loved my tablet before I accepted this stupid update! Grrrrr!

Better take a look at battery status on settings
Can U take a screenshot at morning to see what's happening and share with us?

Neo3D said:
I just got the 4.4.2 KitKat update and now my battery life sucks!
My tablet was at 99% when I went to be last night and DID NOT USE it at all today, except when I tried to turn it on to read before bed time, the tablet shut off on its own because the battery went down to 1%!
Does anyone else have really poort battery life on their Samsung Galaxy Note 10.1 2014 Edition after getting the 4.4.2 KitKat update?
Is there anything we can do about this?
I loved my tablet before I accepted this stupid update! Grrrrr!
Click to expand...
Click to collapse
FYI, I just got this tablet yesterday and it comes with KitKat. Spend sometime turning off some bloatware from the Application Manager. No root yet for Wifi without KNOX tripping, so I can't disable any other apps. Played around with the tablet a little bit and the battery life is not good.
Stats:
- Wifi Always ON even during sleep
- GPS is ON
- BT off
- Samsung crap-features OFF (Smart Stay, Smart Scroll, etc.)
12 hours 42 minutes total time since charged
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"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
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1 hour 34 minutes screen on time
4 hours 23 minutes Android OS keeping the CPU stay awake??

I have found that usually after a factory restore, Android os stats is usually high. It will eventually settle down.

4ringsa6 said:
I have found that usually after a factory restore, Android os stats is usually high. It will eventually settle down.
Click to expand...
Click to collapse
But mine comes with 4.4.2 out of the box. It was not upgraded.

I have very bad battery life since I updated to kk. Talked to Samsung and they told me it was the battery. Send it to repairs and 2 weeks later I got it. It still got the same horrible battery life. Just 3h and 40 min of use.

If you wanna give this a try.....
[back-story]
When I received the US version of KK it too trashed my battery life and i don't know why but it does not benefit my tablet....
[/back-story]
The Spain, and now Mexico versions of the KK software work much better.
http://forum.xda-developers.com/showthread.php?t=2719750
It's easily updatable via Odin, all languages are included, you do not need to be rooted, and it will not trip the Knox software counter.
Plenty of instructions around here if you stumble.... Good luck.

Itchiee said:
If you wanna give this a try.....
[back-story]
When I received the US version of KK it too trashed my battery life and i don't know why but it does not benefit my tablet....
[/back-story]
The Spain, and now Mexico versions of the KK software work much better.
http://forum.xda-developers.com/showthread.php?t=2719750
It's easily updatable via Odin, all languages are included, you do not need to be rooted, and it will not trip the Knox software counter.
Plenty of instructions around here if you stumble.... Good luck.
Click to expand...
Click to collapse
That means I have to reconfigure my tablet again.
Stupid Samsung! Just when I thought they got their **** straight.

Yeah you may have to put a little effort into this lol. Actually you can install right on top of it and you probably won't lose much but I would recommend a hard reset anyway to start fresh....
Sent from my SM-P600 using Tapatalk

I hard reset my tablet (remember, it's brand new), which already have 4.4.2. Configured Google account, disabled bloatware, turned off GPS, turned ON Wifi and installed Zinio for a test.
Left the tablet overnight, use it very slightly. Check out the battery drain caused by Android OS... It's definitely some sort of bloatware or 4.4.2...

I am having the same issues, was going to start a thread but will wait post here then to have some collected place to talk about possible solutions... IF AN IPAD HAD A STYLUS..... I like to be able to play around with all sorts of things but I wish there were two streams of android a stable working one and an experimental one.... sometimes it seems that even though its version 4.4 its still beta!
Note the 4.30 hour long screen time to deplete my battery from 100% to 15%... yes i know the stylus takes some toll but THAT is not acceptable.
Style of usage:
- used Papyrus for note taking
- had calculator open in floating window
- had screen brightness to 20%
- GPS off, Google Now off, little bit of music playing for about 2hours (headphones)

I noticed that my battery stats are not resetting!
I plug in the charger for a little bit and then unplug it but battery stats didn't reset?
This is so frustrating. I thought after giving the new rom some time to "settle" battery life still sucks!
Sent from my SM-N900T using XDA Premium 4 mobile app

Neo3D said:
I noticed that my battery stats are not resetting!
I plug in the charger for a little bit and then unplug it but battery stats didn't reset?
This is so frustrating. I thought after giving the new rom some time to "settle" battery life still sucks!
Sent from my SM-N900T using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Give this a try, some may not be applicable to you. I'm on 4.4 and right now I have 1day21hr and 4 1/2hrs on screen time and still have 35% battery left.
1) Turn off wifi always on
In Settings -> account -Go through each account (email,gmail,facebook Samsung etc..)and set them only sync what you needed:
2) Turn off sync for Samsung account
3) Only sync what you need for your google account (I only sync calendar).
4) Google+ account - turn off auto backup
In Settings -> cloud ->
5) turn off auto backup
In Settings -> backup and reset
6) turn off "backup my data"
7) Turn on "Power Saving"
8) Turn off location service (GPS)
You should be set...

buhohitr said:
Give this a try, some may not be applicable to you. I'm on 4.4 and right now I have 1day21hr and 4 1/2hrs on screen time and still have 35% battery left.
1) Turn off wifi always on
In Settings -> account -Go through each account (email,gmail,facebook Samsung etc..)and set them only sync what you needed:
2) Turn off sync for Samsung account
3) Only sync what you need for your google account (I only sync calendar).
4) Google+ account - turn off auto backup
In Settings -> cloud ->
5) turn off auto backup
In Settings -> backup and reset
6) turn off "backup my data"
7) Turn on "Power Saving"
8) Turn off location service (GPS)
You should be set...
Click to expand...
Click to collapse
I believe problems are less in standby time but more in screen on time. Standby barely uses any power (in my experience, except once where exchange service sucked it dry within a night) but screen on time causes much of the battery to be exhausted. your values however aren't very satifying as well if you say you had 4,5h of screen time (idk what you did then, playing games might be more energy exhausting) it shouldn't be that low. However its still better than my 4,5h and 8h total to go down to 18-10%

Keks1234 said:
I believe problems are less in standby time but more in screen on time. Standby barely uses any power (in my experience, except once where exchange service sucked it dry within a night) but screen on time causes much of the battery to be exhausted. your values however aren't very satifying as well if you say you had 4,5h of screen time (idk what you did then, playing games might be more energy exhausting) it shouldn't be that low. However its still better than my 4,5h and 8h total to go down to 18-10%
Click to expand...
Click to collapse
I don't think so. See my Screenshot. I left my device on its own and Android OS is keeping the device awake. And NO, it's not caused by installed apps,

I believe that's related to the new stock kernel.. are you on a stock rom? You can try a linaro's based kernel and post results...
Sent from my SM-P601 using XDA Premium 4 mobile app

junior_ilha said:
I believe that's related to the new stock kernel.. are you on a stock rom? You can try a linaro's based kernel and post results...
Sent from my SM-P601 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Yep, stock. I actually have not rooted the tablet and using it out of the box. I reset this thing so many times and same issue.

junior_ilha said:
I believe that's related to the new stock kernel.. are you on a stock rom? You can try a linaro's based kernel and post results...
Click to expand...
Click to collapse
I flashed Xluco and will give an update once I can tell if it helped or not. on stock it drained about 20% per hour no good for a tab with no hard use on it...

Lifehacker just posted this:
http://lifehacker.com/the-popular-android-apps-that-hog-the-most-battery-dat-1607263758
And 4 of Samsung "bloatware" are right there, including that stupid AllShare Cast!!

Hmm....., I turned off these 2 and now I don't get too much "Android OS" awake now:
- Picasa Uploader
- Sapamonitor
In 9 hours, I have 4 hours of screen on time but only only 1.5 hours of Android OS.