Database Develop

[Q] Phone runs hot, High Drain - All usual fixes tested.

Device: Samsung Galaxy S GT i9000
Symptoms:
When Charging Device is hot to the Touch in the upper half of the screen and on the rear between the camera and the heat vent.
Battery drains at around 15-25% per hour when IDLE. 15% when in deep sleep in airplane mode with ALL APPS KILLED. 25% when I leave ALL network connections open and allow sync.
Phone was new less than 2 months ago. Still under warranty and I will send it back if no ideas come from this but wanted to see if anyone had a solution as I have noticed HUNDREDS of similar posts all vaguely scattered through different threads on different sites around the web and this seems like the definitive place to come to see if anyone can put their finger on it.
When did this occur?:
A short while after (days) of flashing CM9 nightly from the beginning of June (05/06 I think but can't recall exactly).
Tests performed:
Purchased new battery and fully charged - no change.
Flashed stock GB ROMs where the issue had not occured - no change.
Cleared battery stats several times - no change.
Tried different modems/radios including Nexus S radios- no result
Current ROM: CM 7.2
Kernel: Glitch 13.1
Other ROMs/Kernels where the same results were achieved...
CM9 (latest nightlies)
Stock JVU, JVS, JW4 and JW5
Semaphore Kernel, Devils Kernel
I use Voodoo Sound/Colour kernels apart from the testing I did with stock ROMs
Will leave it on over night after clearing stats so you can see for yourselves.
Any questions ask away.

I should add:
Used OS Monitor and one of the more detailed CPU monitors to look at what was going on.
Did not appear at any time to be using what I would consider high CPU utilisation, typically trending between 0 and 30ish. No background apps running, all radios turned off.
The only anomaly that stuck out at me is that system_server was using ~105% of RAM which I would have thought was rather difficult. Made me wonder if there was something loading/unloading itself from RAM.
As I am a heavy music user I have tested the Mediaserver issue where corrupt files are continually scanned by mediaserver process. Removed all media files from both my external and internal storage then formatted both while on a stock ROM (JVU and JW4). There was no change.
EDIT: I should add - The thing that makes this so strange to me is that the battery decreases at a rapid rate when Battery stats regarding usage DO NOT CHANGE. The percentages for the apps that WERE using the battery - i.e. winamp/mediaserver/android system do not change.
The reason I have posted this is that i have seen literally HUNDREDS of people posting this very same issue but never in the same place and never getting an answer.
Also - Thankyou to the kind mod/admin who approved my account so I can edit stuff. It was getting a bit annoying for the first week there.

Re
Hi,
To be honest I never heard/read of the problem you are describing. Most users report high battery drain on a certain ROM/kernel/modem but you say you have tried quite a lot.
If the phone is new, the only thing that comes to mind is that the USB charging socket is faulty. It may not charge properly or even have some bad connectors that are damaging the battery.
In any case, Samsung support is the way to go here.
Hope this helps

OMG, im having the same exact problem... the phone is super hot on the back where the sim card is inserted. I did everything as you, still no change, my battery lasts like 7 hours on deep sleep. Guess our phone is broken. super crap.

Anyone knows how to fix this? Is there anyway that my phone has some files from previous custom roms even though used odin to flash samsung original ones?

Had the same problem when my device was only 6 months old, the battery was becoming faulty, got a new battery and problem solved.

I bought a new battery and i still have the same problem... which battery did u get?

streakpt said:
I bought a new battery and i still have the same problem... which battery did u get?
Click to expand...
Click to collapse
An official samsung battery from Amazon, re flash you device with another rom and wipe battery stats.

Did all that, the problem still continues... mega battery drain and the phone is at 44C degrees... is there any tool i can use to diagnose the problem?

Hi snaleman,
You could try BetterBatteryStats, to help diagnose your issue further, there is a paid version on the market (Google Play Store). There is also a thread on this forum, from the dev....hint
I tried winamp for android, ages ago, but had similar issues. (This player might well be your issue.) So I now use "PowerAmp". Neutron MP is cool too.
Also, do you use lippol94's kernel cleaning script. I use this every kernel/ROM change.
Search here for this:
ultimate_kernel_cleaning_script
Hope this info helps your baby.

Hey
U can try to flash a stock rom from sammmobile.com..
Use it for a few days and check...may help u..
Cheers
Sent from my GT-I9000 using xda app-developers app

Backup your apps with titanium backup or something else.
Make a backup from CWM recovery
Wipe data/cache/dalvik
Restore user apps and not system app
If your problem is not fixed you can restore your CWM backup

Nothing you guys posted worked... battery lasts 11 hours on sleep...

Another problem that im facing is that when im on a phone call, theres is alot of breaks in the other persons voice and sometimes the voice call goes out and i lose all my network signal.

If you are using the Voodoo sound app that may be the cause. I've noticed on my phone that deep sleep no longer works when the voodoo app is installed, most likely the app is holding a partial wake lock and not releasing it.
See if it happens with the app uninstalled or frozen.
Sent from my Nexus 7 using Tapatalk 2

Signal Strength¿
streakpt said:
Another problem that im facing is that when im on a phone call, theres is alot of breaks in the other persons voice and sometimes the voice call goes out and i lose all my network signal.
Click to expand...
Click to collapse
You've just made me think of something else that it may be.
Do you have 4 or 5 bars of signal strength?
I've found when in certain areas (very close to "deadspots" in network reception), that if I use another frequency, [eg. 900 & 2100 (for my network), yours may be different] I can get a better signal, also much better battery life, as the phone is not struggling to reach the network.
If you use your dialer to enter this code
*#*#197328640#*#*
Then
[1] DEBUG SCREEN
THEN
[8] PHONE CONTROL
then
[7] NETWORK CONTROL
then
[2] BAND SELECTION
you will then have a selection of frequencies available. The asterisk * will tell you what one(s) is/are active.
"Google" your network service providers frequency bands. I found mine were on a "Wiki" page.

[Q] Battery health

Hi, I would like to know the best way to measure my battery health. For about a month my battery starts to drain fast. I know my phone is already old and battery don't handle the same charge, but I have recharged the phone all night long and in ten minutes using wifi to just update some apps the battery just gone.
It is just ridiculous as I don't use any different configuration.
To be more specific, my phone configurations are:
- Cyanogenmod 7.2 by vo-1 (31/06/2012) deodexed by me;
- Firekernel Unnoficial OC (22/07/2012), CPU governor: smartassv2, max 787, min 245;
- Adrenaline Engine 4.2b;
One more thing. I was facing the same problem with blackhawk kernel.
I just think a battery can't die a sudden.
Could anyone help me with this?

Floydroider said:
Hi, I would like to know the best way to measure my battery health. For about a month my battery starts to drain fast. I know my phone is already old and battery don't handle the same charge, but I have recharged the phone all night long and in ten minutes using wifi to just update some apps the battery just gone.
It is just ridiculous as I don't use any different configuration.
To be more specific, my phone configurations are:
- Cyanogenmod 7.2 by vo-1 (31/06/2012) deodexed by me;
- Firekernel Unnoficial OC (22/07/2012), CPU governor: smartassv2, max 787, min 245;
- Adrenaline Engine 4.2b;
One more thing. I was facing the same problem with blackhawk kernel.
I just think a battery can't die a sudden.
Could anyone help me with this?
Click to expand...
Click to collapse
There are a few things that can be causing this, but the first thing that you can try is to wipe your battery stats using "BatteryCalibration" app. After flashing a few things, it's best to do this. I had the same thing happen after flashing my third ROM or so.
After that, it basically comes down to the apps and widgets that you have running. Shut them off with a task manager so they don't end up draining your battery, but it might not be that either....
The only other thing that I can think of is that I heard in another thread (I really wish that I could find it again ) that the ace has a motherboard fault that causes it to drain faster than usual.
Other than that, all I can say is that the Ace generally has poor battery life, and it really does suck, but I don't really know how much more you can do. You could try flashing a stock-light ROM and see if it does the same thing (wipe battery stats too). But I would say is that you should try wiping the stats and see if anything changes.... Other than that.... I`m out. Hopefully it helps, and if it doesn`t, you might need to take it in (Service Center or wherever you bought the phone).
Maybe try searching in other threads (as it is a common problem) but besides that, goodluck :fingers-crossed:

thatdude02 said:
There are a few things that can be causing this, but the first thing that you can try is to wipe your battery stats using "BatteryCalibration" app. After flashing a few things, it's best to do this. I had the same thing happen after flashing my third ROM or so.
Click to expand...
Click to collapse
I forgot to mention but I already did the calibration, using the app and manually to see if I could get different results.
I even tried to force a better charge, charging the phone off, waiting till 100%, unplugging and recharging, till the phone gets 100% again.
Ace's battery isn't good, but a month ago my phone was holding 12-14 hours without charge, using wifi a lot, that's why I think something is wrong.
Well, I'm flashing the original stock rom to see if get some change.
Thanks about the motherboard information, this is new for me :good:
Gonna see tomorrow if the battery holds better with the original stock ROM.
Thanks again!

Wiping the battery stats is a myth. All it does it clear the battery usage screen!
Android has a built in tool which can try to check the health of your battery.
Open the dialer
type *#*#4636#*#*
then go to battery information
Look at battery health.

Feedback
Just to give a feedback, my battery was really damaged. I bought a new one, stock because I didn't find other, and the phone now easily last a day, even using wifi a lot.
But that's not the only reason why I posting here again, I want to share how my old battery is. Comparing with new one, I realized that the old battery had stuffed something about 5 mm
If you pay attention, you'll see the small deformation.
Don't know yet what could have cause this, but I think it was heat and bad recharges...
Thanks for the help :good:

Floydroider said:
Just to give a feedback, my battery was really damaged. I bought a new one, stock because I didn't find other, and the phone now easily last a day, even using wifi a lot.
But that's not the only reason why I posting here again, I want to share how my old battery is. Comparing with new one, I realized that the old battery had stuffed something about 5 mm
If you pay attention, you'll see the small deformation.
Don't know yet what could have cause this, but I think it was heat and bad recharges...
Thanks for the help :good:
Click to expand...
Click to collapse
I'd recommend you to use SetCPU to prevent this on your new battery. Set up a profile with sound notification when it hits around 40degree, and underclock it at the same time.

I faced a similar problem. Battery was hardly six months old when it died but it was my fault. I was running a wi-fi tether and continuously charging it for about two days. :silly:
Got a new one under warranty. Been a year with the new battery and just recently facing problems with it. 3G just sucks the life out of it.

OK I just got 3g on my phone (yay for promotional 6gb plans!). But yeah, the 3g definitely kills my battery. I used to be able to go two or three days with very little use. Now I can only go one day even with standby with my 3g enabled. As long as I can put my phone on to charge before it dies, its all good to me
Finally with my 3g going, I understand everyone else's pain with the battery life haha
Sent from my GT-S5830 using xda premium

Battery help please

I know there are countless threads/topics regarding high battery usage re p880, but I didn't want to resurrect an old thread, or hijack someone else's, so if I'm wrong in creating this thread, then I apologise.Can someone please tell me what exactly this service is/does, as it seems to be the biggest problem regarding my lousy battery life.. phone just sees it as android system (pic 3) where as BS+ sees system back up service. As i have backup disabled, this is puzzling me.
Thanks in advance,
Edit: in the time it took to write this message, ive lost 14% in battery, including the time it took to screenshot.
Edit 2: Ah, now im back on PC i can type properly.
been playing around, disabling system backup service, but a new process just gets launched in its place, from key chain, to LocMgrProvider...seems as you disable one, another replaces it, all using same battery. Must i just accept, that the android system is just going to eat my battery?..like cookie monster at the biscuit counter?
If it helps, im running stock 4.0.3, freshly flashed, with F/reset, unrooted.
Thanks in advance, and any help is very much appreciated,
Sun
Sent from my LG-P880 using Nuke Powered Pigeon

SunHounD said:
I know there are countless threads/topics regarding high battery usage re p880, but I didn't want to resurrect an old thread, or hijack someone else's, so if I'm wrong in creating this thread, then I apologise.Can someone please tell me what exactly this service is/does, as it seems to be the biggest problem regarding my lousy battery life.. phone just sees it as android system (pic 3) where as BS+ sees system back up service. As i have backup disabled, this is puzzling me.
Thanks in advance,
Edit: in the time it took to write this message, ive lost 14% in battery, including the time it took to screenshot.
Edit 2: Ah, now im back on PC i can type properly.
been playing around, disabling system backup service, but a new process just gets launched in its place, from key chain, to LocMgrProvider...seems as you disable one, another replaces it, all using same battery. Must i just accept, that the android system is just going to eat my battery?..like cookie monster at the biscuit counter?
If it helps, im running stock 4.0.3, freshly flashed, with F/reset, unrooted.
Thanks in advance, and any help is very much appreciated,
Sun
Sent from my LG-P880 using Nuke Powered Pigeon
Click to expand...
Click to collapse
that's... waaaaaay too much. why are you on ICS anyway?
my suggestion is - factory reset from stock recovery (warning: your internal sd card will be fully formatted). in case you don't care about ICS, i strongly suggest JB. if you don't care about voiding warranty, i strongly suggest unlocked bootloader + custom rom and kernel. oh and also, grab better battery stats app, it shows an easier-to-understand overview when compared to apps you used

Flying_Bear said:
that's... waaaaaay too much. why are you on ICS anyway?
my suggestion is - factory reset from stock recovery (warning: your internal sd card will be fully formatted). in case you don't care about ICS, i strongly suggest JB. if you don't care about voiding warranty, i strongly suggest unlocked bootloader + custom rom and kernel. oh and also, grab better battery stats app, it shows an easier-to-understand overview when compared to apps you used
Click to expand...
Click to collapse
Thanks for such a quick reply.
I'll tell you the scenario, as quick as i can make it.
had the phone 2 weeks, got it on a 24mnth contract ( i know, sigh)
anyway, updated it to JB (4.1.2?) through LG pc suite, but thought the battery life seemed to be worse, so i downgraded with LG flash tool, to ics.
after a F/reset, i rooted, then F/Reset again, but it seemed sluggish.
the long and short of it is, ive gone up to JB twice, and down to ICS twice, rooted and unrooted twice, disabled a whole HOST of stock bloatware, and am still left with similar results as posted in the pics.
ATM ive a clean ICS and im at a loss as to what to do. ive been reading all the threads about improving battery, culling the bloatware apps etc before i decided to post.
as for bootloader, i will probably do that sometime in the future, when im more knowledgeable on the subject. at present, i dont want to be left with a 2 year contract to a brick
thanks again,
ps: you say better battery stats is better than battery stats plus?...will download now, thanks
Sun

interesting situation. it's strange that sluggishness persisted between factory resets and .dz flashes back to 10x version.
first off, how does the phone behave when you're not using it? is it draining battery bad? is it going into deep sleep? what are the percentages of cpu states (you can check this in better battery stats, as battery stats plus seems to be too clunky for me to read proper info)?
if it's deep sleeping properly, then yeah, the issue is with something sucking up the juice while screen is on. next off, check cpu states - if it's locked at 1.5ghz often, when you have screen on but doing nothing, it's significant info.
what i've noticed with display, you can count up to 3:30 hours of onscreen time with stock rom (this is with very conservative use of wifi and data during this period, and no heavy gaming for example) - that's around 200 minutes of on screen time, meaning you should get around 2 minutes of screen on per 1% of reduction in battery - how far are you from this result?
i hope we manage to get to the bottom of this, but i still recommend unlocking bootloader and flashing custom kernel and/or rom. you can't really brick o4x while unlocking bootloader afaik, and you've done more complex operations when switching from 20a to 10h than bootloader unlock is.

I would go the other way to be honest. If you do a full factory reset, install no apps, no Google account or anything and still get a similar problem with the battery drain then I would take the phone back for replacement as that is abnormal.
No point running a risk with your warranty when might be a hardware fault.

It's midnight here now so can't really test it till.morning now. When phone is in standby, it seems to hold.its juice ok. I'm sat here now, with nothing switched on except WiFi, screen at 23% brightness , and am just using tapatalk and I'm getting 2-3 mins per 1% screen. Less if I play in the menus. First thing tomorrow, I'll reset the phone again, before dl'ing any apps. Then I'll only download BBS and see how I get on. I'll also.monitor battery loss over night.
Sent from my LG-P880 using Tapatalk 4
edit:
after i wrote the above last night, i decided to watch a movie on my phone in bed.(headphones, dont wanna disturb the missus ) and i managed to watch a movie of 2hrs 10 mins, with 23% battery drain, on stock video player, yet just browsing through the phones menus/ light web surfing, eats the juice like crazy.
left phone off charge over night, and didnt even have a 1% drop in 7 hours (wifi off,sync off, data always off(dont use it)) and phone set to 2g mode
Sun

current set up
Right,
I've performed another F/reset, and rooted. Installed TB pro, and uninstalled/frozen a skew of apps/services as listed per the thread in my sig.
Installed better battery stats, charged phone to 100% took off charge, and am just waiting to see how it goes now. Would you recommend using phone as normal while BBS collects its info, or to let the phone alone for a while?
thanks again,
Sun

SunHounD said:
Right,
I've performed another F/reset, and rooted. Installed TB pro, and uninstalled/frozen a skew of apps/services as listed per the thread in my sig.
Installed better battery stats, charged phone to 100% took off charge, and am just waiting to see how it goes now. Would you recommend using phone as normal while BBS collects its info, or to let the phone alone for a while?
thanks again,
Sun
Click to expand...
Click to collapse
you can leave it alnoe during night to check if it deep sleeps properly, right now you're interested in cpu states option in bbs, to see if it uses too much cpu when doing normal tasks such as surfing, reading, watching/listening media etc. your goal is to get over 2 mins per 1% drain (in the end, over 3 hours of onscreen time with no heavy gaming). with those stats, your can say that your phone is draining normally, just that lg reports stupid stuff (f.e., stock roms report screen as using 20% of the battery, while in reality screen is using waaay more, the most actually)

Thanks Flying_Bear, I'll refrain from doing any more resets etc for the rest of the day, see how the readings progress and post on that tomorrow, after overnight analysis.
This piece of one of your previous posts just stuck in my mind:
Flying_Bear said:
i hope we manage to get to the bottom of this, but i still recommend unlocking bootloader and flashing custom kernel and/or rom. you can't really brick o4x while unlocking bootloader afaik, and you've done more complex operations when switching from 20a to 10h than bootloader unlock is.
Click to expand...
Click to collapse
TBH, from everything I've been reading on it, it kind of scared me off the subject, but to see you say it was less complicated than what I've already done, has got me to thinking.
The biggest thing for me at the minute, before considering that, it to rule out faulty hardware. At least if thats the case, i still have warranty intact.
Is the performance increase really that noticeble after flashing custom kernels/roms?
Thanks again for your time,
Sun

no.
apart from everyone here praising custom roms and kernels, DON'T flash a custom rom, when you are concerned about battery.
the best rom out there regarding battery life is by far a stock rom, be it 4.0.3 or 4.1.2.
the worst thing about the custom roms is WiFi. with stock i was able to let WiFi run through the night with less than 1% loss per hour.
on every custom rom my battery needs at least 5% per hour for WiFi, but most of the time even more. its just not useable.
shortly followed by 3g network, which has a much bigger battery drain than stock, too.
i am on CM and different kernels for some month now and i consider going back to stock, because i want to leave WiFi on in the night, otherwise my phone eats up my 100MB free 3G traffic way too fast.
BUT...
the reason for your battery hungry phone is not the ROM, the kernel or the phone itself.
your battery drain is absolutely absurd for stock ROM and can only be caused by badly programmed apps you have running.
OR:
you have your phone relatively new and play with it EVERY FRICKIN MINUTE, which would be an explanation, too.
you said, you were able to watch a whole 2h movie with only 23% loss, that sounds like the stock ROM i know. on custom you would lose around 50% for this. but when your phone loses battery when you "play with the launcher", you maybe have installed a 3rd party launcher, that eats your power, are using facebook/skype/whatsapp/(insert any other badly coded program, that has no push mode), or have just fiddled with the developer settings a bit too much.
Because you noticed your battery drain with 4.1.2, too, then i suspect a badly coded app. these are the reason for nearly every battery drain (and the reason for wakelocks, too) apart from bad drivers in custom kernels, like the WiFi desaster all the custom rom users have here.

I think the only reason I would consider custom roms, is a performance increase.... If it wont give me one, then I see no point in going down that route.
LamerDuck said:
i am on CM and different kernels for some month now and i consider going back to stock, because i want to leave WiFi on in the night, otherwise my phone eats up my 100MB free 3G traffic way too fast.
Click to expand...
Click to collapse
Totally agree, its why I refuse to enable data in the first place.
the reason for your battery hungry phone is not the ROM, the kernel or the phone itself.
your battery drain is absolutely absurd for stock ROM and can only be caused by badly programmed apps you have running.
Click to expand...
Click to collapse
when I took the original screenies, in OP, I didnt really have much in the way of apps on it. I'd not long before done a clean flash, then removed some of the bloatware that came with it.
OR:
you have your phone relatively new and play with it EVERY FRICKIN MINUTE, which would be an explanation, too.
Click to expand...
Click to collapse
At first yes... hey it was a new toy at the time. Novelty wore off about day 3 though.
you said, you were able to watch a whole 2h movie with only 23% loss, that sounds like the stock ROM i know. on custom you would lose around 50% for this. but when your phone loses battery when you "play with the launcher", you maybe have installed a 3rd party launcher, that eats your power, are using facebook/skype/whatsapp/(insert any other badly coded program, that has no push mode), or have just fiddled with the developer settings a bit too much.
Click to expand...
Click to collapse
yeah, it handled a movie quite well, I was quite pleased with this. When i said messing with the menu, I just meant exploring the phone; no custom/3rd party launchers, no messing with Dev stuff.
At the minute now, the only extra apps on my phone are XDA Dev app, tapatalk4, BBS, TB-pro and root uninstaller pro.
Oh, and can I ask.... aside form the ability to "pimp" your phone out, or the extra customization, is there any benefit to flashing custom roms? As it cant be for better performance....
thanks
Sun

LamerDuck said:
no.
apart from everyone here praising custom roms and kernels, DON'T flash a custom rom, when you are concerned about battery.
the best rom out there regarding battery life is by far a stock rom, be it 4.0.3 or 4.1.2.
the worst thing about the custom roms is WiFi. with stock i was able to let WiFi run through the night with less than 1% loss per hour.
on every custom rom my battery needs at least 5% per hour for WiFi, but most of the time even more. its just not useable.
shortly followed by 3g network, which has a much bigger battery drain than stock, too.
i am on CM and different kernels for some month now and i consider going back to stock, because i want to leave WiFi on in the night, otherwise my phone eats up my 100MB free 3G traffic way too fast.
BUT...
the reason for your battery hungry phone is not the ROM, the kernel or the phone itself.
your battery drain is absolutely absurd for stock ROM and can only be caused by badly programmed apps you have running.
OR:
you have your phone relatively new and play with it EVERY FRICKIN MINUTE, which would be an explanation, too.
you said, you were able to watch a whole 2h movie with only 23% loss, that sounds like the stock ROM i know. on custom you would lose around 50% for this. but when your phone loses battery when you "play with the launcher", you maybe have installed a 3rd party launcher, that eats your power, are using facebook/skype/whatsapp/(insert any other badly coded program, that has no push mode), or have just fiddled with the developer settings a bit too much.
Because you noticed your battery drain with 4.1.2, too, then i suspect a badly coded app. these are the reason for nearly every battery drain (and the reason for wakelocks, too) apart from bad drivers in custom kernels, like the WiFi desaster all the custom rom users have here.
Click to expand...
Click to collapse
yeah wifi can drain too much, but i had almost same stats on custom as on stock - 3-4% per hour if wifi is left on, with sync on and push notifications and blabla. you've got things going great if you have 1% per hour with wifi on.
lg has crammed up a whole lot of **** inside their stock rom - apart from useful stuff like proper mhl drivers, quickmemo, nice gallery & video apps, it's bloated to hell - mlt logging, ****ty launcher (imo), widgets that only work on stock launcher, "smart log service", RIDICULOUS throttling etc). you can root and uninstall most of these, but even then you might not get what you're looking for.
my best onscreen time on stock 4.1.2 20a/20b was 3 hours 3 minutes. that's with conservative use of wifi, 3g and almost no gaming. on custom rom & kernel, today i pumped out 3 hours 37 minutes, and was on 17% battery, when i plugged it in in order to recharge it. that was an obvious increase for me (keep in mind there were custom rom/kernel combinations that had me pulling barely 2 hours onscreen time).
you need unlocked bootloader for custom kernels, and say what you say but proper kernels ARE battery savers and performance enhancers. stock kernel has for some people insane issues with baseband_xmm wakelock (for me it was rediculous, 6% per hour drain when not using a phone and no deep sleep at all) and wipes didn't help with that; only custom kernel fixed it. it has RIDICULOUS (for emphasys) throttling effect, slowing your cores down to 1ghz each when battery hits 43 degrees celsius (which for me was around 20 seconds of normal usage on a hot day outside), which leaves you crippled if you're planning on doing any complex action with your phone.
alternative is - unlock bootloader, check custom roms and see if you like'em (Zaiben is f.e. debloated and improved stock, something OP might like, or he can go cm, or carbon or any other if he prefers custom features). if you don't, it's easy to flash a .kdz file back.

Flying_Bear said:
yeah wifi can drain too much, but i had almost same stats on custom as on stock - 3-4% per hour if wifi is left on, with sync on and push notifications and blabla. you've got things going great if you have 1% per hour with wifi on.
lg has crammed up a whole lot of **** inside their stock rom - apart from useful stuff like proper mhl drivers, quickmemo, nice gallery & video apps, it's bloated to hell - mlt logging, ****ty launcher (imo), widgets that only work on stock launcher, "smart log service", RIDICULOUS throttling etc). you can root and uninstall most of these, but even then you might not get what you're looking for.
my best onscreen time on stock 4.1.2 20a/20b was 3 hours 3 minutes. that's with conservative use of wifi, 3g and almost no gaming. on custom rom & kernel, today i pumped out 3 hours 37 minutes, and was on 17% battery, when i plugged it in in order to recharge it. that was an obvious increase for me (keep in mind there were custom rom/kernel combinations that had me pulling barely 2 hours onscreen time).
you need unlocked bootloader for custom kernels, and say what you say but proper kernels ARE battery savers and performance enhancers. stock kernel has for some people insane issues with baseband_xmm wakelock (for me it was rediculous, 6% per hour drain when not using a phone and no deep sleep at all) and wipes didn't help with that; only custom kernel fixed it. it has RIDICULOUS (for emphasys) throttling effect, slowing your cores down to 1ghz each when battery hits 43 degrees celsius (which for me was around 20 seconds of normal usage on a hot day outside), which leaves you crippled if you're planning on doing any complex action with your phone.
alternative is - unlock bootloader, check custom roms and see if you like'em (Zaiben is f.e. debloated and improved stock, something OP might like, or he can go cm, or carbon or any other if he prefers custom features). if you don't, it's easy to flash a .kdz file back.
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Click to collapse
Hi Flying_ Bear, can you pl confirm what combo of rom and kernel is giving you 3 hr 37 min of screen on time and which ones to avoid (ones that gave you 2 hrs)?

Carbon rom 4.2.2 version with iodak v7 had the best onsceen. Id say stock was worst, 2hrs 45mins of onscreen with no gaming and low brightness, with stock kernel

[Q] Samsung Galaxy Note critical battery life after 4.1.2 update

Hello!
I know that there were a lot said about battery problems in 4.1.2 android, but i still haven't found any solution on my problem. My Note was bought with GB 2.3.6 and had an awesome battery, but after i updated it to JB 4.1.2 (via Kies), suddenly battery life is catastrophic. I have everything off (bluetooth, wi-fi, gps), my screen brightness is on minimum, i use my phone on GSM band (not 4g), i also disabled some of unused apps, etc...everything said was also my practice on previous version 2.3.6 and phone battery lasts up to 4 days, but now, it drains off in 17hrs and I barely use my phone!
If I check battery stats, it shows that screen is the major consumer of battery and it seems like it is on all the time, although the phone screen is physically off most of the time. It means something causing my phone being awake all the time instead of being off.
Any ideas how to fix this??

ajvek8558 said:
Hello!
I know that there were a lot said about battery problems in 4.1.2 android, but i still haven't found any solution on my problem. My Note was bought with GB 2.3.6 and had an awesome battery, but after i updated it to JB 4.1.2 (via Kies), suddenly battery life is catastrophic. I have everything off (bluetooth, wi-fi, gps), my screen brightness is on minimum, i use my phone on GSM band (not 4g), i also disabled some of unused apps, etc...everything said was also my practice on previous version 2.3.6 and phone battery lasts up to 4 days, but now, it drains off in 17hrs and I barely use my phone!
If I check battery stats, it shows that screen is the major consumer of battery and it seems like it is on all the time, although the phone screen is physically off most of the time. It means something causing my phone being awake all the time instead of being off.
Any ideas how to fix this??
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Click to collapse
4 days? really? think that is unheard of. Either how, it should last longer than 17 hours.
Try going back to factory settings, perhaps theres something running thats divided by zero :silly: .
If you feel adventurous you can also choose to root & try a custom rom. Though thats your responsibility and choice entirely.

Anthropostar said:
4 days? really? think that is unheard of. Either how, it should last longer than 17 hours.
Try going back to factory settings, perhaps theres something running thats divided by zero :silly: .
If you feel adventurous you can also choose to root & try a custom rom. Though thats your responsibility and choice entirely.
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Click to collapse
Yup 4 days, not kiddin...4 days of average use.
I forgot to mention that i already did the factory reset and i also wipe the cache partition in recovery menu... I disabled practically everything, and i use things when i need, nothing is set on auto, sync or anything. Last night I didn't touch the phone for about 9 hrs and battery consumption was around 1% which is ok, but it's draining everytime i turn on the screen like 5% in 10mins. BBS shows that well known GTALK_ASYNC_CONN as a battery eater. Is it possible to kill this annoying thing on un-rooted phone???

Z1 Battery Problems

Hi, I have a Sony Xperia Z1 running cm12 nightlies. I've been getting this problem where the phone shows 40% battery but turns off at this and on restart shows 1%
This was okay, however, recently it has started turning off at 70%
I don't really want to replace the battery, as my warrenty is voided (isn't it) and it's not the easiest thing to disassemble.
Thanks.

iamthatmattguy said:
Hi, I have a Sony Xperia Z1 running cm12 nightlies. I've been getting this problem where the phone shows 40% battery but turns off at this and on restart shows 1%
This was okay, however, recently it has started turning off at 70%
I don't really want to replace the battery, as my warrenty is voided (isn't it) and it's not the easiest thing to disassemble.
Thanks.
Click to expand...
Click to collapse
Can you try to calibrate your battery once?
100-0% and then 0-100% in one go
___
v7
XDA Assist

v7 said:
Can you try to calibrate your battery once?
100-0% and then 0-100% in one go
___
v7
XDA Assist
Click to expand...
Click to collapse
Yeah, I've already tried this, even did it for a couple of cycles and it didn't seem to have much of an effect.

iamthatmattguy said:
Yeah, I've already tried this, even did it for a couple of cycles and it didn't seem to have much of an effect.
Click to expand...
Click to collapse
This happens only on the current ROM?Did you try flashing stock?
___
v7
XDA Assist

v7 said:
This happens only on the current ROM?Did you try flashing stock?
___
v7
XDA Assist
Click to expand...
Click to collapse
Bit of a dumb question, but where could I get stock from?

iamthatmattguy said:
Bit of a dumb question, but where could I get stock from?
Click to expand...
Click to collapse
Use XperiFirm to download stock firmware for your device.You can use Flashtool to flash the stock fw.
___
v7
XDA Assist

v7 said:
Use XperiFirm to download stock firmware for your device.You can use Flashtool to flash the stock fw.
___
v7
XDA Assist
Click to expand...
Click to collapse
Thanks, could I not just simply flash it with the recovery?

iamthatmattguy said:
Thanks, could I not just simply flash it with the recovery?
Click to expand...
Click to collapse
Don't waste your time on flashing and calibrating. You have classic symptoms of a dying battery. Soon, the phone would shut down at 90%, because your battery capacity is 6-7 times less. Try to run a youtube video and your phone will die in less than 20 min.
If you read this and general threads, you would have found similar complains. You need to replace your battery.

optimumpro said:
Don't waste your time on flashing and calibrating. You have classic symptoms of a dying battery. Soon, the phone would shut down at 90%, because your battery capacity is 6-7 times less. Try to run a youtube video and your phone will die in less than 20 min.
If you read this and general threads, you would have found similar complains. You need to replace your battery.
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Click to collapse
Ugh yeah that's what a quick Google search told me as well
How easy would you say taking apart and replacing the battery in a Z1 is?
Edit: If it's the battery why does it suddenly cut off instead of quickly decreasing.

iamthatmattguy said:
Ugh yeah that's what a quick Google search told me as well
How easy would you say taking apart and replacing the battery in a Z1 is?
Edit: If it's the battery why does it suddenly cut off instead of quickly decreasing.
Click to expand...
Click to collapse
Because battery is measured by voltage and when voltage goes down to a certain level, kernel shuts down the phone. If your normal battery has 20 cells, yours has only 3 left and voltage goes down rapidly under load, because the other cells are dead. Even if the battery has 1 cell left, when it is charged, the phone will show 100%, while there is a real capacity to hold just a few percents.
Watch youtube videos on how to change the battery. You may or may not break the back pannel (I did). So, get a replacement back glass too.

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optimumpro said:
Because battery is measured by voltage and when voltage goes down to a certain level, kernel shuts down the phone. If your normal battery has 20 cells, yours has only 3 left and voltage goes down rapidly under load, because the other cells are dead. Even if the battery has 1 cell left, when it is charged, the phone will show 100%, while there is a real capacity to hold just a few percents.
Watch youtube videos on how to change the battery. You may or may not break the back pannel (I did). So, get a replacement back glass too.
Click to expand...
Click to collapse
I had same issue with my z1 since last 4-5 weeks. Thinking that battery is dying I changed it yesterday with a brand new sony battery. Now even after changing my battery, the problem persists. Phone switches off suddenly with 45-60% charge left.
I am on PAC Roam running 5.1.1 . Prior to this I have tried MX rom, Ressurection remix and few other ROMs running 5.1.1 however the same problem wa there as well.
I think it is not only to do with battery but with something else. Please help

roushan84 said:
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I had same issue with my z1 since last 4-5 weeks. Thinking that battery is dying I changed it yesterday with a brand new sony battery. Now even after changing my battery, the problem persists. Phone switches off suddenly with 45-60% charge left.
I am on PAC Roam running 5.1.1 . Prior to this I have tried MX rom, Ressurection remix and few other ROMs running 5.1.1 however the same problem wa there as well.
I think it is not only to do with battery but with something else. Please help
Click to expand...
Click to collapse
You probably have a random reboot issue (thanks to some recent dumb kernel/rom improvements), as opposed to switch off. Look for what your battery shows after reboot: if it is 1%, it is battery related and you got a bad replacement. If it is close to the value before reboot, it is your rom/kernel. There is no third option. And by the way, battery drain has nothing to do with bad battery. Most drains are caused by Gapps and social apps. Also, if you install a new rom or battery, you have to give it a few charging cycles.

optimumpro said:
You probably have a random reboot issue (thanks to some recent dumb kernel/rom improvements), as opposed to switch off. Look for what your battery shows after reboot: if it is 1%, it is battery related and you got a bad replacement. If it is close to the value before reboot, it is your rom/kernel. There is no third option. And by the way, battery drain has nothing to do with bad battery. Most drains are caused by Gapps and social apps. Also, if you install a new rom or battery, you have to give it a few charging cycles.
Click to expand...
Click to collapse
Sometimes (like just 10 mins back) my phone goes off and when I reboot it, it comeback with same battery percentage but most times it needs charging to reboot and when it comes back alive, battery stat is 1%
Same was the case with my last battery. Now I am even more confused as to what is the exact cause Should I lock my bootloader and flash Stock 5.1.1. ftf and see if problem still persists?

roushan84 said:
Sometimes (like just 10 mins back) my phone goes off and when I reboot it, it comeback with same battery percentage but most times it needs charging to reboot and when it comes back alive, battery stat is 1%
Same was the case with my last battery. Now I am even more confused as to what is the exact cause Should I lock my bootloader and flash Stock 5.1.1. ftf and see if problem still persists?
Click to expand...
Click to collapse
If your phone boots on its own after switching off, then it is not the battery issue. CM roms are becoming worse and worse for several reasons: too many devices; bad sources from google and incompetent software guys (both at CM and Google). I don't like apple and their products, but when one entity controls hardware and software, you will have fewer bugs. Google pays their engineers for introducing more and more ad related things into Android, as opposed to making Android a full blown operating system.
Go to stock and see how long your new battery lasts: if it dies after 20 min of youtube, you have a bad battery. Period. If it is not, then find a custom rom that does not have random reboots, which unfortunately there is only 2 or 3...
For any measurements to be valid, you need to give your battery at least one cycle on a current rom (from 100% to 15-16%).
P.S. You may have both issues. If you paid $10-12 for a new battery, then most likely, you have a Chinese fake that only looks like real Sony...

optimumpro said:
If your phone boots on its own after switching off, then it is not the battery issue. CM roms are becoming worse and worse for several reasons: too many devices; bad sources from google and incompetent software guys (both at CM and Google). I don't like apple and their products, but when one entity controls hardware and software, you will have fewer bugs. Google pays their engineers for introducing more and more ad related things into Android, as opposed to making Android a full blown operating system.
Go to stock and see how long your new battery lasts: if it dies after 20 min of youtube, you have a bad battery. Period. If it is not, then find a custom rom that does not have random reboots, which unfortunately there is only 2 or 3...
For any measurements to be valid, you need to give your battery at least one cycle on a current rom (from 100% to 15-16%).
P.S. You may have both issues. If you paid $10-12 for a new battery, then most likely, you have a Chinese fake that only looks like real Sony...
Click to expand...
Click to collapse
I bought it in Rs 1500 (approx $30) from authorized sony service centre which also gave me a warranty of 6 months. Worst case I can return it to them but just want to be sure before I try and do that.
My phone switched on once after going off and it was with same battery stat (last instance). there have been couple of times when I could turn my phone on but it showed only 1 or 2% battery.

roushan84 said:
I bought it in Rs 1500 (approx $30) from authorized sony service centre which also gave me a warranty of 6 months. Worst case I can return it to them but just want to be sure before I try and do that.
My phone switched on once after going off and it was with same battery stat (last instance). there have been couple of times when I could turn my phone on but it showed only 1 or 2% battery.
Click to expand...
Click to collapse
Just do what I recommended in the previous post: go to stock, fully charge and see how long the battery lasts on youtube: in 20 minutes, you should lose no more than 13-15% on a new battery, as opposed to go to zero. Some Z1 batteries have a problem: Mine died about 9 months ago. My old Xperia ION (which is a 2012 phone) battery is still going strong (lasts for at least 2 days on Jeallybean).

roushan84 said:
Sometimes (like just 10 mins back) my phone goes off and when I reboot it, it comeback with same battery percentage but most times it needs charging to reboot and when it comes back alive, battery stat is 1%
Same was the case with my last battery. Now I am even more confused as to what is the exact cause Should I lock my bootloader and flash Stock 5.1.1. ftf and see if problem still persists?
Click to expand...
Click to collapse
I just recharge it to 100% and ran YouTube for 35 mins and from 100 it went to 93%..!!
Only 7 battery loss for 30mins YouTube on 240p and full volume
I hope the issue was there for first few cycles. In case if still persists, will try and flash FTF tomorrow and see what happens:fingers-crossed:

roushan84 said:
I just recharge it to 100% and ran YouTube for 35 mins and from 100 it went to 93%..!!
Only 7 battery loss for 30mins YouTube on 240p and full volume
I hope the issue was there for first few cycles. In case if still persists, will try and flash FTF tomorrow and see what happens:fingers-crossed:
Click to expand...
Click to collapse
That means your battery is fine and you have random reboots related to the rom you use. Here are custom roms that have no reboots: slimrom; tesla, DU and Jaguar. The last 3 are mine. LOL. I am not promoting my roms, don't need to (just look at the number of downloads, especially Jaguar)... In case of Jaguar, you have to flash November 1 kernel on top of the latest release. It is in November that they introduced changes that cause reboots...

Haha..
I know you don't have to plug-in your roms. I guess I will hold it for a day to see how my phone behaves. Major battery drain is when I play Clash of Clans. I am on CoC to check endurance. If not, them will move to Jaguar with Nov kernel on top.
I have realized that it's somewhere in November since there random reboots and battery issues started

optimumpro said:
That means your battery is fine and you have random reboots related to the rom you use. Here are custom roms that have no reboots: slimrom; tesla, DU and Jaguar. The last 3 are mine. LOL. I am not promoting my roms, don't need to (just look at the number of downloads, especially Jaguar)... In case of Jaguar, you have to flash November 1 kernel on top of the latest release. It is in November that they introduced changes that cause reboots...
Click to expand...
Click to collapse
I flashed latest Jaguar with Nov 1 kernel and c6902 modem (Version 4). Have also flashed 5.1 gapps (Micro version) and restored all my apps. have created Zip from titanium backup.
Phone still went off from around 75% battery. when restarted again, it came back with 45% battery, just to die within 30 seconds :crying: