[Q] Battery drain. Any solutions so far? - Nexus 7 Q&A, Help & Troubleshooting

Hey guys,
As prolly most of you I came accross some serious battery lifespan issues (during night I drains about 20% of battery and during the day I have to charge it every couple of hours).
Have you heard of any known solution to this problem apart from turning of wi-fi in sleep mode, lowering brightness of the screen etc? To me all of these are just reducing collateral damage while the real problem lies elsewhere.
I've heard that 4.2.1. android worked very good with battery. Is it possible to downgrade it to this version from 4.2.2. without having to root it and thus loosing guarantee?

anachronis said:
Hey guys,
As prolly most of you I came accross some serious battery lifespan issues (during night I drains about 20% of battery and during the day I have to charge it every couple of hours).
Have you heard of any known solution to this problem apart from turning of wi-fi in sleep mode, lowering brightness of the screen etc? To me all of these are just reducing collateral damage while the real problem lies elsewhere.
I've heard that 4.2.1. android worked very good with battery. Is it possible to downgrade it to this version from 4.2.2. without having to root it and thus loosing guarantee?
Click to expand...
Click to collapse
I don't think you have to root to change builds. Of course, if you are unlocked, you can just go and flash a 4.2.1 ROM

If you're rooted than try a custom Rom, Franco kernel, or factory reset.
I'm stock, rooted with Franco kernel on the nexus 4.
Sent from my Nexus 4 using xda premium

Seems similar to what happens with me, only sometimes though. Others is just fine dropping a few percent over night vs a few percent per hour. Not sure what causes it but it does happen. Best right now is about 1% every 30 min or so. Typically its much quicker than that.
Sent from my Nexus 7 using xda app-developers app

I do want to root things cause I just a few weeks ago bricked my Infinity...
How can I get 4.2.1 build back without rooting?

anachronis said:
I do want to root things cause I just a few weeks ago bricked my Infinity...
How can I get 4.2.1 build back without rooting?
Click to expand...
Click to collapse
use the google nexus tool or wugs toolkit. instead of selecting the 4.2.2 build select the 4.2.1 build and select download and install factory rom.it will install the build you selected and will completely wipe out your whole device making it back to the day you bought it.before using any toolkit be sure to save important data from your device to your pc,nandroid backup,or any type of backup you use.its really simple.
---------- Post added at 10:26 AM ---------- Previous post was at 10:20 AM ----------
oh and btw. my battery life is superb.overnight it doesnt drop even 1%.maybe it could be an app that you have installed.i used to use dxtoolbox and for some odd reason battery life was poor.no longer using it and i get the most outta my n7.

Yup, I'm on 4.2.2 stock, rooted. I get days out of a charge. Lose maybe 1 percent over night.
Sent from my cell phone telephone....

Mine just suddenly started doing this. I have been using AOKP Milestone 1, and then updating to the nightlies. But the power drain is huge. Even on the charger, it was charging for 6-8 hours, and is only up to 53%?? I have CPU Spy, and Better Battery Stats, and I can't see anything causing the massive power drain. It ran fine a week ago. Maybe it started with AOKP Nightly 05-21-2013. Going to try flashing back to the one prior to that one.

podagee said:
use the google nexus tool or wugs toolkit. instead of selecting the 4.2.2 build select the 4.2.1 build and select download and install factory rom.it will install the build you selected and will completely wipe out your whole device making it back to the day you bought it.before using any toolkit be sure to save important data from your device to your pc,nandroid backup,or any type of backup you use.its really simple.
---------- Post added at 10:26 AM ---------- Previous post was at 10:20 AM ----------
oh and btw. my battery life is superb.overnight it doesnt drop even 1%.maybe it could be an app that you have installed.i used to use dxtoolbox and for some odd reason battery life was poor.no longer using it and i get the most outta my n7.
Click to expand...
Click to collapse
Where can I get these tools from? Play/Google Store hasn't got any of them in stock.

If you don't need it then set Wi-Fi to turn off when the screen is off. I lose 1-2% overnight that way
Sent from XDA app

anachronis said:
Where can I get these tools from? Play/Google Store hasn't got any of them in stock.
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1809195
another thing that is good for adb drivers is pdanet.http://pdanet.co/a

Is drain unique to Wi-Fi 3G Models?
I'm pretty new to android, but I started having this problem too after 4.2.2. It's randomly worse, and other than the usual workarounds you already mentioned, the one thing I noticed that's weird is looking at battery usage stats, the 2nd highest user (after screen) is sdcard app (which displays with an icon showing it's part of the android os, and usage varies between 13-14%). A Google tech tried to convince me that's the AT&T Sim card, but it's not, it started after the update to 4.2.2. Nexus 7 doesn't even have sd card capability...does anyone know what's going on? It seems to me this drain issue should be hugely affecting Nexus 7 users, and I can't find much about it. I'm not rooted and don't really want to 'cause I just wanted a simple little tablet to carry around with me, since the iPad mini isn't great yet.

Related

[CLUE] 2.3.4 GRJ22 Battery Drain

Hi,
I have a 9023 and performed the manual upgrade to 2.3.4. One thing I've noticed was a massive battery drain with the same previous usage.
Using Astro I've found that the process d.process.media was constantly using nearly 90% of CPU.
So, I have restarted and the process seems to have stop.
As I noticed some users also complained about the battery drain after the update. Please check if this process is also being crazy with you.
Actually, same thing happens on my 2.3.3 when i use a picture in usb storage as wallpaper. if i use system wallpaper, then problem goes
Sent from my Nexus S using XDA App
I9020a here on manual 2.3.4 with the same battery drain. I had cell standby eating up the bulk of it. I figured flashing kb3 would fix it.
Sent from my Nexus S using Tapatalk
I would like to point out that the above process will not appear in battery usage screen. Also I have the same Cell Standby as top eater.
From what I see, battery usage is now more inline with what I had in 2.3.3 GRI40.
Still I'll charge it overnight ans see how it manages tomorrow during the day.
I can't find that process in my list. However, so far since the update my battery does appear to be draining faster. Im quite a light user and from one charge can get 2 days worth of usage (ie, charge tonight, use thursday and friday and charge friday night). I will see if this can still be acheived. Wont be happy if not.
Im trying 2.3.4 with kb3.
Rotellian said:
I can't find that process in my list.
Click to expand...
Click to collapse
Using Astro file manager: Menu -> Tools -> Process Manager -> Processes tab.
My process id (pid) is 336. Yours may vary.
I think I have identified my issue. But still it could be a good idea to find if any process is misbehaving.
DoomFragger said:
Using Astro file manager: Menu -> Tools -> Process Manager -> Processes tab.
My process id (pid) is 336. Yours may vary.
I think I have identified my issue. But still it could be a good idea to find if any process is misbehaving.
Click to expand...
Click to collapse
Cheers, found it, different pid. not using anything at the moment, and none of the other processes seem to be msbehaving, Will have to keep an eye on the usage though.
Initial findings not good. Lost 7 percent whilst asleep (~1% for every hr). Im pretty sure on 2.3.2 i used to lose 2 or 3%. How difficult it is it to role back to an earlier version. For me its quite important to be able to get 2 days usage out of it. One of the things ive been most impressed with.
Rotellian said:
Initial findings not good. Lost 7 percent whilst asleep (~1% for every hr). Im pretty sure on 2.3.2 i used to lose 2 or 3%. How difficult it is it to role back to an earlier version. For me its quite important to be able to get 2 days usage out of it. One of the things ive been most impressed with.
Click to expand...
Click to collapse
Flash 2.3.2 full ROM to downgrade or restore 2.3.2 nandroid (you might want to downgrade radio as well, nandroid doesn't include radio).
My battery life is back to normal with kb3 radio.
Sent from my Nexus S using Tapatalk
i noticed after the upgrade to 2.3.4 + netarchy kernel the battery life is amazing! 2 days and still at 53%
normally by now it would be down to like 10% using the previous ROM
hrm do you use custom UV?
Rotellian said:
I can't find that process in my list. However, so far since the update my battery does appear to be draining faster. Im quite a light user and from one charge can get 2 days worth of usage (ie, charge tonight, use thursday and friday and charge friday night). I will see if this can still be acheived. Wont be happy if not.
Click to expand...
Click to collapse
How is your battery life after 2.3.4, testing complete?
I use stock 2.3.4. After 1.5 days of use there is still 55% of my akku left.
Sent from my Nexus S using XDA App
I think that my problem is the radio too. Could you please tell me where I can download kb3 so I can flash it? **edit.. it ok, I found it http://forum.xda-developers.com/showthread.php?t=975105
I will try to flash it and see if it works for me. Battery life for me has definitely gone down after 2.3.4
Trying to upload a picture. This is overnight. The Cell standby is ridiculous. Lets see how it goes.
Could you please not upload anymore screenshots without writing down some more details ?
Ok, you have 34% display and 31% cell standby, but how do we know if display time was 5 mins and not 2 hours ? Or if it was at 10% brightness or at 100% brightness ?
You should either write down all the details to the story, or don't write them at all. That includes uploading useless screenshots as well.
robstunner said:
I9020a here on manual 2.3.4 with the same battery drain. I had cell standby eating up the bulk of it. I figured flashing kb3 would fix it.
Sent from my Nexus S using Tapatalk
Click to expand...
Click to collapse
Hmmm. I'm running a I9020a also and no battery drain.
Sent from my Nexus S using XDA App
I also have faster speeds than I previously had with kb2 & kb3. Battery drain seems normal with faster connectivity.
Sent from my Nexus S using XDA App
Cell standby is fixed tenfold with my 2.3.4 i9020a on kb3. I personally saw no improves connectivity with kd1
Sent from my Nexus S using Tapatalk

Battery life decreasing...

Ok, so I've had my SGN for little under a month for the first few weeks I had it I was getting great battery life, almost 6 hours screen time full day of battery etc.. Then I rooted it using one click root because I wanted some more access, since then battery life has seemingly been slowly getting worse. I have tried changing back to stock roms and custom roms, I've fully discharged the battery and charged while it is off a number of times but I'm down to 3 hours screen time and can't get a full day out off it anymore.
Is this something to do with the way I rooted, what can I do test and try and get back my battery life, this is the main reason I got this phone..
It's hard to say if it was the first update I installed/rooting or something wrong with the way I'm charging but it's certainly decreased even on a stock ROM without installing anything..
Anybody else encountered this?
Check battery stats and show us a print screen
Sent from my GT-N7000 using XDA App
Going to try latest firmware and just bought Odin mobile.. Hoping that'll fix it.
Won't let me add a picture says I don't have permission.. Sigh.
Sent from my GT-N7000 using xda premium
Goonish said:
Ok, so I've had my SGN for little under a month for the first few weeks I had it I was getting great battery life, almost 6 hours screen time full day of battery etc.. Then I rooted it using one click root because I wanted some more access, since then battery life has seemingly been slowly getting worse. I have tried changing back to stock roms and custom roms, I've fully discharged the battery and charged while it is off a number of times but I'm down to 3 hours screen time and can't get a full day out off it anymore.
Is this something to do with the way I rooted, what can I do test and try and get back my battery life, this is the main reason I got this phone..
It's hard to say if it was the first update I installed/rooting or something wrong with the way I'm charging but it's certainly decreased even on a stock ROM without installing anything..
Anybody else encountered this?
Click to expand...
Click to collapse
I have the same "feeling" with my Note. I have installed System Panel to monitor usage but I can't find anything specific that seems to be sucking the power. But it certainly "feels" like my battery is draining faster than before.
It's probably as the phone gets older, you install more & more Apps. Some of these are probably working in the background sucking your battery.
Sent from my GT-N7000 using Tapatalk
Even with a clean stock rom, it doesn't seem as good as it was without root or any updates.. Wish I remembered what the phone came loaded with, I'd give that a go..
xamaba said:
I have the same "feeling" with my Note. I have installed System Panel to monitor usage but I can't find anything specific that seems to be sucking the power. But it certainly "feels" like my battery is draining faster than before.
Click to expand...
Click to collapse
Try Rocket Rom v17 or latest XXLA1 firmware and your battery life will come back even better than before, just me
Same "feeling" here! I will try LA1 firmware....
So I'm currently sitting on 4.30 hours screen time, 15 hours uptime with 20% battery remaining.
Running la1 firmware and la3 modem, been using stock browser. Taking lots of photos with flash too, so I think this combo has rectified my issues but I know there's more potential as this is roughly the same stats I got on my dhd, although that was underclocked and tweaked to the clappers.
Faith is resetored in my device, hopefully it improves.

n00b here, need help with battery issues

Hi there; this is my first post so please go easy on me.
Bought a Nexus 4 which is my first Android device, but the battery life is bugging the hell out of me. Surely the screen should always be at the top, right? I left it to sleep overnight on a full charge to find that it had shot down to 60% when I woke up at 7 this morning.
I haven't rooted or flashed or anything like that, because as I said, I'm an Android virgin. I have location settings off, only Gmail syncing and the usual push notifications here and there. Nothing too fancy or strenuous.
Any help on how I can go around fixing this? I'm a little afraid to rooting/flashing/ROMs etc, because I've no clue what works best.
Cheers!
If your saying you left the screen on over night, meaning the phone never went into deep sleep.. If you slept for let's say 6 hours and the phones screen was on for that whole time it's normal that it went down to sixty percent battery.
Maybe I'm understanding your post wrong? Btw I cannot see the picture you posted.
Sent from my SGH-T999 using xda app-developers app
Turn off mobile data and lower the screen brightness to 0 during the day. Also disable WiFi when you're sleeping. I also make sure all apps are closed using the app manager button on the far right.
Mine's been fine following this logic.
Oh sorry, I should meant sleeping overnight, whilst I slept cosily in my bed.
I'll reattach the image in a second
Ah, you won't be able to see any links till I've gone past 10 posts. Back in a bit then, ha.
atw1927 said:
Ah, you won't be able to see any links till I've gone past 10 posts. Back in a bit then, ha.
Click to expand...
Click to collapse
lol I see it now.. try performing a reset, android shouldn't be that high.. are you rooted? custom rom/kernel?
Crisisx1 said:
lol I see it now.. try performing a reset, android shouldn't be that high.. are you rooted? custom rom/kernel?
Click to expand...
Click to collapse
This is NOT the answer. His battery in the image has dropped 7%. If he hasn't used the screen much it is perfectly understandable that screen might not be a large percentage of that 7%. As he uses the phone more screen will use a larger percentage of his battery and Android OS will use less.
If he gets to the point where the screen is on for an hour or two and the percentages are still like this then yes there is a problem.
Sent from my Nexus 4 using Tapatalk 2
joshnichols189 said:
This is NOT the answer. His battery in the image has dropped 7%. If he hasn't used the screen much it is perfectly understandable that screen might not be a large percentage of that 7%. As he uses the phone more screen will use a larger percentage of his battery and Android OS will use less.
If he gets to the point where the screen is on for an hour or two and the percentages are still like this then yes there is a problem.
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
My android system has never been that high, regardless if I used the phone for 10 minutes or 10 seconds , or not at all.
atw1927 said:
Hi there; this is my first post so please go easy on me.
Bought a Nexus 4 which is my first Android device, but the battery life is bugging the hell out of me. Surely the screen should always be at the top, right? I left it to sleep overnight on a full charge to find that it had shot down to 60% when I woke up at 7 this morning.
I haven't rooted or flashed or anything like that, because as I said, I'm an Android virgin. I have location settings off, only Gmail syncing and the usual push notifications here and there. Nothing too fancy or strenuous.
Any help on how I can go around fixing this? I'm a little afraid to rooting/flashing/ROMs etc, because I've no clue what works best.
Cheers!
Click to expand...
Click to collapse
Actually No the "Screen" should not always be at the top of the stat list. If you use the phone more than it idles, then yes... but if you are like me, mine says "Phone Idle: 20%" (which is on top) and "Screen" is 4th on the list with 12% (Wi-Fi and Cell standby above it) [this is my personal phone, and I mostly use my work phone. hence the high Idle & standby]
I was having an issue with my phone running out of battery, with very little usage from it. I mean very little, I might make 2 calls from it each day, and respond to an email now and then. I found that an App was preventing my Screen from going into "Deep Sleep" or even "Sleeping" possibly. So I uninstalled all apps (well I only had like 4 additional apps installed), except for 2 that I need (Google Voice & Drive). Powered off the phone, charged it fully, then powered back on. Its been running on the same charge for 24+hrs now and reads 68% battery remaining.
So check the apps you have installed, some use background data, and might be causing problems...
Crisisx1 said:
My android system has never been that high, regardless if I used the phone for 10 minutes or 10 seconds , or not at all.
Click to expand...
Click to collapse
And your phone is the definitive guide for what Android OS usage is? Maybe his phone woke up those services for a period of time longer than normal.
The answer of "lol looks wrong root and install kernel" is terrible advice when so little information is given.
Sent from my Nexus 4 using Tapatalk 2
What else would you like to know?
atw1927 said:
What else would you like to know?
Click to expand...
Click to collapse
A longer battery graph would help a lot. If yuppy want top search XDA there is a free app called better battery stats that will help you diagnose if something is running in the background eating battery or even if your phone I'd properly entering deep sleep.
Sent from my Nexus 4 using Tapatalk 2
Better Battery stats and battery screenshots here
atw1927 said:
Better Battery stats and battery screenshots here
Click to expand...
Click to collapse
See now it is much easier to see that you actually do have a problem and what it is. You have the wakelock problem as you can see from Better Battery Stats which falls under Android OS on the other screen. It also appears that you have somewhat weak signal which could cause the wakelock to drain battery even more. There's not much you can do about that wake lock, some kernels have patches for it but those have their own issues as well.
Sent from my Nexus 4 using Tapatalk 2
Could I just install any kernel on stock android and be OK with it? As I've said I've no idea what's best for me; just something nice and clean that doesn't have issues like this. I live onsite where I work so my WiFi is pretty much on all the time if that helps in anyway whatsoever
I'm gonna let it run down completely tonight and charge it, but I don't expect it to help much.
joshnichols189 said:
And your phone is the definitive guide for what Android OS usage is? Maybe his phone woke up those services for a period of time longer than normal.
The answer of "lol looks wrong root and install kernel" is terrible advice when so little information is given.
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
I never told him to install a kernel. The advice I gave is to do a reset then I asked if he was rooted or running a custom rom or kernel because that might of been the problem.
Sent from my SGH-T999 using xda app-developers app
Bump
Fully charged overnight, battery still sinking like a ship. 45 minutes and I'm already down to 94% already!
Idiot question; will installing a kernel just solve this? For now as a new guy I'd like to keep it as stock as possible before fiddling with it.
atw1927 said:
Fully charged overnight, battery still sinking like a ship. 45 minutes and I'm already down to 94% already!
Idiot question; will installing a kernel just solve this? For now as a new guy I'd like to keep it as stock as possible before fiddling with it.
Click to expand...
Click to collapse
The battery on the n4 seems horrible.
I'm completely stock I just got my phone yesterday, I charged it to 100% now its at 64% battery with only 47 minutes of screen on time.
on the s3 I would be around 83% with 47 minutes of screen on time.
I'm gonna unlock the boot loader and root soon and try Franco kernel I've been reading good things about it.
Sent from my Nexus 4 using xda app-developers app
The battery life on the stock kernel isn't great because the CPU management isn't optimized well. It ramps up the CPU (frequency, number of active cores...) very easily and keeps it there long, which removes the occasional lag but sucks more battery. Flashing a more battery friendly kernel would definitely help you if that is the root of your battery issues and not a badly coded app.
Franco's kernel is a very popular one, and very battery friendly compared to stock (and that doesn't mean you lose performance). It is the one I'm currently using. Most people report of screen on times of 4 or 5 hours. With not so heavy usage and wifi (not 3g) I can also pass 5 hrs.
To install a kernel you need to unlock your boot loader and install a custom recovery. No need to root, but.. why not since you're at it
You can try different kernels with the stock ROM. You don't necessarily need a custom ROM. Just be careful to read the dev's OP and instructions, and definitely not to flash a kernel for another device.
Also another thing that reduces battery is your mobile data, if there are a lot of programs that sync on the background. You can use a program that turns off your mobile data when your screen is off and switch it back on just for a sync every xx minutes. Juice Defender is such app, though I like to use Tasker for that. If you use Tasker and are interested in that project, ask or send me a pm. It works great.

Nexus 4 Shuts Down Randomly and Battery Problem

Help people, I have the nexus 4 for over 3 weeks and great but a few days ago when it was nearly full battery (around 80% or so) suddenly shutted down and I couldn't turn it back on until after 1 min or so plugging in. I did not care about it the first time ... But today, after having it charging about 2 or 3 hours I disconnected the cable to use the phone and the battery dropped from 90%+ to 8%, so I connected the cable and put it back to 100%, used it for 1 hour and it suddenly dropped back to 2% from 80% and then shutted down instantly.
Here are some screens.
Help please, and yes I have used the search function, but didn't find the solution on other posts.
tacwold said:
Help people, I have the nexus 4 for over 3 weeks and great but a few days ago when it was nearly full battery (around 80% or so) suddenly shutted down and I couldn't turn it back on until after 1 min or so plugging in. I did not care about it the first time ... But today, after having it charging about 2 or 3 hours I disconnected the cable to use the phone and the battery dropped from 90%+ to 8%, so I connected the cable and put it back to 100%, used it for 1 hour and it suddenly dropped back to 2% from 80% and then shutted down instantly.
Here are some screens.
Help please, and yes I have used the search function, but didn't find the solution on other posts.
Click to expand...
Click to collapse
What apps have you installed lately, maybe there is a rogue one. Install BetterBatteryStats for app behaviour and Cpu Spy for deep sleep issues.
Are you rooted? Custom rom or kernel? Undervolted or overclocked?
gee2012 said:
What apps have you installed lately, maybe there is a rogue one. Install BetterBatteryStats for app behaviour and Cpu Spy for deep sleep issues.
Are you rooted? Custom rom or kernel? Undervolted or overclocked?
Click to expand...
Click to collapse
I'm not rooted, all at stock. I didn't touch the voltages, I didn't do anything. I installed some games (vector, pudding thd, order and chaos) evernote, mega manager, pulwifi.
I'll install betterbatterystats and cpuspy, thank you.
Edit: look what happened to the battery now...
Also I attached a pic of the cpuspy, I can't install betterbatterystats because it costs 2 dollars
tacwold said:
I'm not rooted, all at stock. I didn't touch the voltages, I didn't do anything. I installed some games (vector, pudding thd, order and chaos) evernote, mega manager, pulwifi.
I'll install betterbatterystats and cpuspy, thank you.
Edit: look what happened to the battery now...
Also I attached a pic of the cpuspy, I can't install betterbatterystats because it costs 2 dollars
Click to expand...
Click to collapse
I think there is a free version of BBS on XDA , here http://forum.xda-developers.com/attachment.php?attachmentid=1240843&d=1344068311. Consider buying it on Play in the future if it benefits you.
Battery levels can be inconsistent at times, especialy after deep sleep.
gee2012 said:
I think there is a free version of BBS on XDA , here http://forum.xda-developers.com/attachment.php?attachmentid=1240843&d=1344068311. Consider buying it on Play in the future if it benefits you.
Battery levels can be inconsistent at times, especialy after deep sleep.
Click to expand...
Click to collapse
Here it is, and thanks for the replies.
Look in Partial Wakelocks for the biggest consumers.
gee2012 said:
Look in Partial Wakelocks.
Click to expand...
Click to collapse
I looked but I don't know what does that mean, sorry I'm a little noob. Is there anything wrong with it? I though that was just the sound cause I had it at max while I played after that happened.
Edit: I ordered it by count and the RILJ thing is the one at the top. (its not the attached pic)
tacwold said:
I looked but I don't know what does that mean, sorry I'm a little noob. Is there anything wrong with it? I though that was just the sound cause I had it at max while I played after that happened.
Click to expand...
Click to collapse
I see nothing abnormal on usage, just use the phone and see if this behaviour continues. If it does better do a factory reset or reflash the latest factory image.
gee2012 said:
I see nothing abnormal on usage, just use the phone and see if this behaviour continues. If it does better do a factory reset or reflash the latest factory image.
Click to expand...
Click to collapse
Okay I'll uninstall the latest apps I installed and will use the phone normally, if this happens again I'll do a factory reset and if the problem continues I'll call google. Thank you :good:
I wish I could be more help but I had the exact same issue. I could not figure out what was wrong with it but I had previously broken the screen and sent my N4 back to LG for repair. Since it was still under limited warrenty from that repair I sent it back to them again. They said they replaced the charger connector. I got it back and it seems to work fine now.
My issue started after I updated to 4.2.2 I believe. I don't know the root of it but my advice would be to do what you said and call Google or LG.
stones1313 said:
I wish I could be more help but I had the exact same issue. I could not figure out what was wrong with it but I had previously broken the screen and sent my N4 back to LG for repair. Since it was still under limited warrenty from that repair I sent it back to them again. They said they replaced the charger connector. I got it back and it seems to work fine now.
My issue started after I updated to 4.2.2 I believe. I don't know the root of it but my advice would be to do what you said and call Google or LG.
Click to expand...
Click to collapse
Thank you anyway
Similar issue here - I've been using the same apps since I first installed them after N4 purchase (meaning no new apps/games installed in the last few days and no settings changed). Took a nap for a couple of hours and woke up to see N4 completely dead - 0% batt. Charging it now and looking at partial wakelocks etc, havn't seen anything out of the ordinary. Hopefully it doesn't occur again but in the meantime still looking for a reason why this would suddenly happen.
Are you guys using the stock chargers? And charging through mains?
Rizy7 said:
Are you guys using the stock chargers? And charging through mains?
Click to expand...
Click to collapse
Yeah, am on stock JB 4.2.2, unlocked and rooted though, no other change like new roms flashed or anything. I use the stock charger and charge through mains.
I think there have been a few threads with this issue and nexus4s even prior to 4.2.2 and supposedly it was hardware. I called support while talking it through she had heard a few similar cases and it seems to be a hardware/software design issue. My wonder is how can I enforce 'never deep sleep' because my kernel doesn't seem obey.
I woke up this morning with the indicator light on but phone dead requiring reset (charged though - if not overly so). Just now it died again while sitting on my desk at 80% charge and deep sleeping again.
---------- Post added at 06:24 PM ---------- Previous post was at 06:13 PM ----------
Guiding.God said:
Yeah, am on stock JB 4.2.2, unlocked and rooted though, no other change like new roms flashed or anything. I use the stock charger and charge through mains.
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Click to collapse
I've read in a few places today the stock charger has been causing a lot of the charging issues and plan to switch to my old g2's charger tonight
Just RMA'd my nexus for powering off for no reason - would do it a few times a week (and extremely buzzing earpiece - which I was living with), never had a problem putting it back on though or had issues by battery levels being eratic) did quite a bit of testing over the space of a few weeks and found it continued to do it after wiping/fomatting everything and on Stock 4.2.2 non rooted and locked BL. As far as I am concerned if its still doing it with the stock out of the box set up its a hardware fault.
Mine has powered off unexpectedly twice in 30 days. Should I get it rmad?
Sent from my Nexus 4 using xda premium
gamepr said:
Mine has powered off unexpectedly twice in 30 days. Should I get it rmad?
Sent from my Nexus 4 using xda premium
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Dunno about that its up to you mine was doing it 2-3 times per week. I would wipe everything including userdata, reflash stock rom and monitor before going through the rigmorole of the RMA to make sure its deffo a hardware fault. Biggest problem with the RMA is the fact they put a hold on your credit/debit card for the price of the phone. So basically if you don't have the funds available you are shafted (I think you would have to send off to LG in that case).
I got the same problem ..just that my n4 back cracked while was charging :-\
maybe you should try to flash other kernel and rom if you cant solve this issus. if your N4 is unrooted then just bring it to LG store, you got warranty rite ?

Kitkat killed battery life

Kitkat killed battery life. Used to be great, now it sucks.
Sent from my SM-P600 using XDA Premium HD app
KitKat didn't kill battery life. Mine is about the same as it was before KitKat. In about 99.999% of the time an app is to blame. I have a simple but arduous method to find the app that's killing your battery.
I agree the battery has taken a hit. I used to ave about 9hrs of screen on time, now about 6hrs. I also have the chromecast issue. Strange thing is that sometimes the screen doesnt even show up In the battery stats. Sometimes the usage time doesnt change when it shows in battery stats. I am stock, 32gb white US model updated with Kies. I have done many factory resets. I have tried it for 2 days without installing any apps or disabling any samsung bloat, with no change in the tablest behavior.
chgambini said:
I agree the battery has taken a hit. I used to ave about 9hrs of screen on time, now about 6hrs. I also have the chromecast issue. Strange thing is that sometimes the screen doesnt even show up In the battery stats. Sometimes the usage time doesnt change when it shows in battery stats. I am stock, 32gb white US model updated with Kies. I have done many factory resets. I have tried it for 2 days without installing any apps or disabling any samsung bloat, with no change in the tablest behavior.
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Kitkat sent my note into fits. Battery life was terribly erratic at first. Dropping 30% in an hour, then suddenly jumping back up by 10%.
I tried factory reset.... nothing changed. Then I used the Battery Callibration app from playstore. Ran it and followed instructions exactly. (Waited til it was charged 100%, then run the program, then completely drain battery, then let it charge continuously back up to 100%).
Go figure............ since then things have calmed down and I am getting the same battery life as on my old Jellybeans note. (I know, because I've got two of these tablets and literally compared them side by side.)
Or, it could also be that after firmware upgrade things need a bit of time to settle down. Hope this helps.
Barbara
nabour said:
Kitkat sent my note into fits. Battery life was terribly erratic at first. Dropping 30% in an hour, then suddenly jumping back up by 10%.
I tried factory reset.... nothing changed. Then I used the Battery Callibration app from playstore. Ran it and followed instructions exactly. (Waited til it was charged 100%, then run the program, then completely drain battery, then let it charge continuously back up to 100%).
Go figure............ since then things have calmed down and I am getting the same battery life as on my old Jellybeans note. (I know, because I've got two of these tablets and literally compared them side by side.)
Or, it could also be that after firmware upgrade things need a bit of time to settle down. Hope this helps.
Barbara
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Yeah, I am used to android taking a bit to settle in. After my note 3 updated, it seems like it took a month to get back to my "normal". I hope the tablet does too, just frustrating in the mean time
Mine settled down after about 3 days and several resets. Now the battery seems comparable to pre-KitKat.
I don't think it is kit Kat. I'm running kit Kat and easily see 9 hours of screen on. It is most likely an app you have installed that is doing it.
Sent from my SM-P600 using Tapatalk
graewulf1 said:
I don't think it is kit Kat.
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Then not everyone would then mention that it is not change or improved (in stand-by).
No, normally a app or bad file on the sd-card is killing here the battery. All tools to find this out, are already mentioned here. Good luck.
4.4 in and of itself isn't causing poorer battery life. In fact, owners of other devices are reporting improvements. The Exynos N3 for example. There aren't any battery life issue threads on the Pro forums and they have the same h/w and we're most likely using their 4.4 drivers and kernel. There are threads like this in every device forum when an Android version upgrade is released. It's almost always due to a bad flash or a rogue app or service. That and older apps that haven't been updated in ions and aren't playing well with the new OS. People here have reported shorter charging time and longer battery life. So what's being discussed isn't universal. I'd suggest doing a stock recovery and reviewing older apps and those that aren't developed by known and larger developers.
I have a Shield and S4 too. For every poster raving, there seems an opposite view on battery life and the SD card issue.
The SD issue makes battery life debates moot. Google has an Apple wannabe syndrome. Perhaps they will rebrand as Goople.
You can recalibrate the battery by running it down below 20% then recharging. I have seen it recommended to do this every 30 days or so.
My Note 3 with KitKat started using 20-30% of the battery at night while it was idle. Looked and looked and couldn't find a clue to the problem. Decided to reboot, the next night it was fine, used maybe 2-3%
Sent from my SM-P600 using XDA Premium 4 mobile app
gramps50 said:
You can recalibrate the battery by running it down below 20% then recharging. I have seen it recommended to do this every 30 days or so.
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I am overage to believe in this new-world mysteries... and I am still hoping that nobody believe in this stories. Please, let me not became an old, lonely infidel.
Nope
The update did not kill my battery. Did you come from a rom?
ViperInfinity said:
The update did not kill my battery. Did you come from a rom?
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Agree and disagree!
I did have charging problem and battery drain right after KK update. I have to do the Factory Data Reset. Luckily my tablet is back to normal if not better. I did spend sometime go thru all setting. So I managed to get 4 hrs of screen time with moderate use and I still have about 59% of battery.
So I say kk is good or better then jellybean
Sent from my SM-P600 using Tapatalk 2
rushless said:
Google has an Apple wannabe syndrome.
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Everybody wants to be a comedian.
I don't have this issue but maybe affected people should read this : http://forum.xda-developers.com/showpost.php?p=52366635&postcount=236
I updated a couple days ago and since then my battery just sucks. It just went from 100% to 29% in 2 hours just using Youtube. It can't be right. Definitely it's the upgrade!!
I loved my Note 10.1 2014 out the box that I decided not to root. So it's factory stock and suck very bad.
If it's a bad app I can find it. It worked flawlessly before the upgrade.
Factory reset and see if it still happens. A dirty flash can do weird stuff...
Sent from my SM-P600 using Tapatalk
Yeah, im not getting great battery life either since this update. I just reset the tablet in the hope of tracking down what's the issue.
Troubling, since battery life was so great previously.
TabGuy said:
Everybody wants to be a comedian.
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With the joke being on the user that lost the function.

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