[Q] Yet another battery issue thread. But, this one's a "different" problem. No joke. - Galaxy S II Q&A, Help & Troubleshooting

[Q] Yet another battery issue thread. But, this one's a "different" problem. No joke.
Hello Everyone,
I know I know... You're too tired to read through another sad tale of a battery issue. But, this one's weird. It shouldn't be happening, but is happening. I desperately desperately desperately need help solving this.
I own a Galaxy S2 i9100 (bought in July 2011, with Android 2.3.3 installed).
With 2.3.3 on the phone, I could manage getting juice for 24-26 hours.
I recently upgraded Android via Samsung Kies to Jelly Bean 4.1.2, and the battery life immediately tanked. I tested it for a week, and there was no improvement. That's when a friend of mine gave me the ICS 4.0.4 tar file that he managed to copy (from the temp folder in Windows) while upgrading his S2 via Kies.
I thought ICS would solve the battery woes, but it's only marginally better than JB. So, the battery life that I get out of my phone still sucks A LOT. The build I have on my phone is IMM76D.XWLPW. When I use the phone's display, play music, or am on a call, or have the GPRS on, the battery drains drastically. The stand-by time is pretty decent though.
Here's the most recent-est stat: I played music for 1 hour 10 minutes, had about 15 pings exchanged on WhatsApp, and the battery had tanked 14% in that much time.
I badly need this issue sorted. Otherwise, using apps like WhatsApp & Facebook (where people are constantly buzzing me every few minutes) will cause my phone to run out of juice every 6 hours. I used to use these apps (and pretty frequently) when I had Android 2.3.3 and the phone would manage to last 24-26 hours.
What could be the solution?

First thing, if you're still using the battery that came with the phone, replace it. Whether you got 143 hr on GB is irrelevant, a two year old battery is going to fail sooner or later.
Second thing, there is no easy solution (at least not one that doesn't involve messing with your phone, and even then you may not find one). If GB was so good for you, why not go back to it ? Get the GB rom you were running from Samfirmware, flash it with Odin. Done (And don't accept any future OTA updates).
If you want to stay with ICS or JB, search for the BetterBatteryStats thread here, install the app & allow it to run while you use your phone 'normally' for a day or so. Then post logs/etc to the BBS thread; people who post there regularly should be able to help you work out what's causing drain & if anything can be done about it.

Android 4.0.4 ? Oh, dude...you are lucky you haven't done a factory reset.Immediately flash ICS 4.0.3 or JB! You have 100% eMMC brickbug.Look at my signature and flash JB 4.1.2. eMMC bug + factory reset from recovery = phone dead forever.Follow my guide exactly and flash JB and root it !Then flash Apolo kernel for extreme bttery life.

Related

[Q] Another battery thread whith a diffrent approach.

Im starting this thread because of every battery thread I've read people NEVER seem to solve the problem unless they replace their ATRIX. Now a few questions. This is directed to any ATRIX owner in an attempt to find a solid solution.
1. Did your ATRIX only start having battery issues after upgrading to gingerbread?ATRIX or have you had issues beginning from stock froyo?
2. Has any solution suggested by anyone ever worked for you?
3. Does your ATRIX get hot and battery drains extremely fast?
4. Are you frequently connected to 4g H+?
If you answer no. To #2 and yes to #3 I suspect it may be a hardware problem...
on the battery this is what I see and find strange and this is the battery that came with the phone.
1880mah
1880/1930
Mah(min/typ)
7.0/7.1
Wh(min/typ)
Idk where to find production number so I guessed its this [GB/T 18287]
On the phone idk the specific so I took a guess too XD [SKU:65230]
if someone knows the two above please correct me but anyways I posted those because we can compare for those that have a problem and maybe pinpoint it to be a factory defect. Again I am doing this because this battery AND heating issue is aggravating and after 2 months I can't stand it anymore no fixes ever worked so help me and those with the issue out by providing information thanks.
Hello,
1-Yes
2-Not really, I have increase the battery life but not good as the stock Froyo.
3-Yes, but as I remember it get hot too on Froyo. Less or more... I don't know.
4-Always
I have buy an Andida 2200mAh battery and use it since 3 week, I will return to the stock battery tomorrow to check if there is a difference.
1- Nope, my battery has always lasted for around 8-10 hours everyday. (I play games and browse the internet everyday).
2-Never had any battery problem so....
3-Not at all. My Atrix has always been cool.
4. for about 4-5 hours a day (usually i am on wifi but wifi or not.....i have the same battery life).
It could be a ROM problem that you are having, maybe doing a clean install of a ROM could help you(do a complete wipe before installing the ROM). Are you using faux 123's kernel? It under-clocks your Atrix to as low as 216 GHz when your handset is idle but overclocks it to 1.1 GHz when it use. You could download setcpu to under-clock it for better battery saving and this will make your phone less hot.
You can and should also download a battery app from the market and see what your battery temp is like compared to other users. If it's a hardware issue indeed, you better return your Atrix and get a new one asap as it could cause you harm in the future.
Jibraldor said:
1- Nope, my battery has always lasted for around 8-10 hours everyday. (I play games and browse the internet everyday).
2-Never had any battery problem so....
3-Not at all. My Atrix has always been cool.
4. for about 4-5 hours a day (usually i am on wifi but wifi or not.....i have the same battery life).
It could be a ROM problem that you are having, maybe doing a clean install of a ROM could help you(do a complete wipe before installing the ROM). Are you using faux 123's kernel? It under-clocks your Atrix to as low as 216 GHz when your handset is idle but overclocks it to 1.1 GHz when it use. You could download setcpu to under-clock it for better battery saving and this will make your phone less hot.
You can and should also download a battery app from the market and see what your battery temp is like compared to other users. If it's a hardware issue indeed, you better return your Atrix and get a new one asap as it could cause you harm in the future.
Click to expand...
Click to collapse
That's just it with everything stock gingerbread my friends ATRIX doesn't heat up as hot and eat through batteries like a fat guy an a dozen doughnuts in one sitting. We both had stock when I tried this his phone easily outlasts mine both on 4g and a factory reset I tested this when he asked me to root his phone I was gunna kill its bat and charge it to root and install unlock etc. And to my surprise holy sh#t his battery life WAY outlasted mine, AND HIS DEVICE IS ONE.MONTH OLDER i've had this ATRIX for 2 months now so its none of whatever everyone is saying about battery caliBS its a firm suspicion on a hardware flaw, the sooner people can find it the sooner Motorola can replace defective handsets, ridiculous, two stock gingerbread motorolas with 100% stock and mine only lasts about had as
long as my friends own who gets battery results everyone brags about.
i own 3 atrixes ive had an atrix since launch day had its issues at first but one thing that was never a problem was the battery it was always amazing lasted 2 days sometimes well since the offical ota uPdate i updated only one that way its my main phone and right away i noticed the heat coming from the metal clip holding the sd card then next i noticed the batt life was losing 10 every 20 mins or so. since i have rooted it just so i could try n use tb to freeze all the bloatware and still nothing then i tryed just bout every other method on this forum so i didnt wanna lose my warrenty on that 1 so i didnt unlock it so i took my other atrix with a slightly cracked screen it was running on 4.1.26 so i rooted it unlocked it and charged too 100 then flashed to alien v3 so wen it was done it upgraded to gb and right away i noticed the heat from it just like my other one and battery life was losing 10% every 20 mins just like my other one i have also tryed everything on this forum im lost now dnt no wat to do somebody please help also as upset i am about this happing im very relieved to c im not the only person with this issue

[Q] Galaxy S2 GT-9100 battery problem in GB 2.3.4 / 2.3.5 and ICS 4.0.3

Greetings from (cloudy) Germany. Many battery problem threats exist in this forum and the world wide web. Unfortunately most of them reach hundreds of pages and after the 3rd or 4th page it slides away from any technical discussion and becomes very emotional. This is the reason why i´m going to open another one, which hopefully helps me. So here is my ....
... frame what happened:
I own a SGS2 GT-I9100, branding free. It´s almost half a year old. When i bourght it, it came with GB 2.3.4 which worked fine for me. At the beginning of this month i recived ICS via Kies. As a result of this update my phone became super slow. Almost all applications hung and chrashed. So i decited to manually go back to an older FW. I´ve choosen GB 2.3.5, as the look and feel was better for me, then 2.3.4.
... Problem:
Since i did the update to 4.0.3 my battery performance is 10 times worse in ->standby<- as it was with 2.3.4.
... what i did so for, to isolate the problem:
Many threads talk about an Android OS bug. After a long search it is still not clear to me, what this bug excatly means!?!? Apps, which drain the battery are not installed (there are no special Apps installed, except the ones which come with the FW). I have no widgets running and the phone is in Airplane mode. If is switch off the phones display i loose about 30% battery during one night (8 - 9 hours). With 2.3.4 it was about 3% per night. If i use my phone during the day (SMS, Calls, Wireless, 3G and music) it does not increase the battery usage very much. maybe 40% per 8 - 9 hours. I did a factory reset to my phone, installed cpu spy and switched the display off. Analysis show 99% Deep Sleep. nevertheless it uses 30% battery during this time.
In summary:
- German GB 2.3.4 got an update from K.I.E.S. to ICS 4.0.3 -> bad phone performance and battery drained
- Downgrade from German ICS 4.0.3 to German GB 2.3.5 following a procedure and firmware from android-galaxy dot info
- With GB 2.3.5 the performance returned back to normal but battery was still bad.
- Installed German GB following a procedure and firmware from android-galaxy dot info
- Performance was still good, but battery drained.
- Installed netherlands GB 2.3.5 and battery was still draining.
- Received ICS 4.0.3 via software update. Fortunately the phones performance is still very good but the battery drains anyway.
All test where performed without any app installed and in flight mode.
Questions:
1. what ist the so called Android OS bug in connection with battery problems?
2. does anybody have the same problem and solved it?
3. is there any way to recive the stock rom, which came with my phone?
-> a friend of mine have the same SGS2 with GB 2.3.4 and without any battery problem.
Thanks for constructive, helpfull and unemotional technical feedback. If you have further question, send me a PN. I´ll summarize them, and add them to this post. It will keep it clearly and in coherence.
Why not rename General forum Q&A then users wont break the rules .
1. what ist the so called Android OS bug in connection with battery problems?
No search ???? read the Android OS Bug Post .
2. does anybody have the same problem and solved it?
Long time ago Android 2.3.6 .
3. is there any way to recive the stock rom, which came with my phone?
YES if you know what it was and can search for it .
BASICS
FAQ
http://forum.xda-developers.com/showthread.php?t=1065995
NEW HERE
http://forum.xda-developers.com/showthread.php?t=1134290
bible
http://forum.xda-developers.com/showthread.php?t=1473577
Guide
http://forum.xda-developers.com/showthread.php?t=1125282
Stock Roms .and csc
http://forum.xda-developers.com/showthread.php?t=1075278
Thanks for your quick reply. I found many things for "Android OS Bug", also solutions. For example: "Disable widgets" or "stop wireless sharing". Unfortunately nothing helped me.
If you kow about the same problem with the battery and how to solve it, please tell me. I searched for it and was not successful.
I know the page for Stock Roms and how to apply them. As you can read in my initial post i did some up- and downgrades. I went back to official 2.3.4 with existing battery problem.
Maybe this was a missunderstanding. I need to know if ther is any "smart" way, without rooting etc., to get a rom out of an existing phone, without the battery drain.
Regards, ... ibmuser2
theres a zip file for os drain prblm thts for ,wen the phone dosnt charge uptill 100..but still every android user faces a batt prblm,,but android phones r more like a pc..so it s power hungry
rocky23 said:
theres a zip file for os drain prblm thts for ,wen the phone dosnt charge uptill 100..but still every android user faces a batt prblm,,but android phones r more like a pc..so it s power hungry
Click to expand...
Click to collapse
Thx for your information.
My phone charges up to 100% (as far as it does not lie to me). ;-)
I do not complain about the power consumption. I complain about the difference between stock 2.3.4 and any ohter stock ROM / update i installed.
Regards, ibmuser2
ibmuser2 said:
Thx for your information.
My phone charges up to 100% (as far as it does not lie to me). ;-)
I do not complain about the power consumption. I complain about the difference between stock 2.3.4 and any ohter stock ROM / update i installed.
Regards, ibmuser2
Click to expand...
Click to collapse
Have you tried any custom roms?
Or contacted the retailer about this?
Maybe it is a hw problem.
It would suggest a battery fault tbh.
Flashing repeatedly can put strain on the battery (from my own experience), also as far as I am aware, the official update via KIES did cause battery related issues; I never experienced, but my friends did, and Samsung UK where troubleshooting by, removing the battery for 10 minutes, letting it drain out when put back in the phone, then performing a full charge when switched off. If not resolved > factory reset - which did help one of my friends surprise, surprise lol.
If you are still in first 6 months I would advise contacting Samsung Germany for a replacement battery to see if any improvement. Otherwise you can buy cheap online.
Hey superthug & T__. Thx for your good comments. I´ll give it a try. One of my friends have a SGS2 without any problem. I´m going to x-change it with him.
Cheers.
Hey Guys. I made some further testing, but it´s getting more ande more worse.
1. I x-changed the battery with another SGS2. My battery is draining and the other SGS2 is good. -> No battery fault.
2. I did many factory resets, installed betterybatterystats, but it shows no wake locks. all values are below 4%
3. I installed cpu spy, and it shows 98% Deep sleep, when not using it <---- as expected!
4. I changed my FW to:
I9100XWLP7_I9100XXLPS_I9100XEULP5
ICS 4.0.3
Base: I9100XXLPS
Kernel: 3.0.15-i9100XWLP7-CL340913
[email protected]#3
Build: IML74K.XWLP7
All was downloaded from this Forum. I9100XWLP7_I9100XXLPS_I9100XEULP5 is the default, which came with KIES. I verified this with another SGS2, running this FW trouble free!
5. When i charging my SGS2 now, it heats up extremly. The CPU is running at 1Ghz while external power is connected (not only during charging)
Any ideas?
Hi,
I am seeing the same issue. I noticed after upgrading to ICS that the phone was working well for a few days and battery life was good, then after I plugged it in to charge overnight (as I always do) I found that the battery had decreased and the phone was hot to touch near where the camera is located on the back the following morning.
I reset the phone to defaults and I was able to charge a couple of times but this didn't fix the problem and it started happening again.
I have tried charging from my laptop, and 2 separate USB chargers with different cables and the same fault has occured.
A reset of the phone seems to temporarily fix the issue and I can charge the phone again but when I plug in again to charge I see the battery decreasing.
It seems as if something is screwing up and causing the CPU to run at 100% when the charger is attached which would explain why the phone is warm/hot to touch.
I'm just testing at the moment to see if I can get the phone to a state where the charger is connected and the battery is decreasing to try to identify the cause. I suspect that it may have something to do with when the phone goes to sleep and the screen turns off so I will try to set the timeout to 10 mintues to see if this helps and the battery starts to charge again.
Suspend Mode bug + linux power management regressions: flight/airplane drains battery
Hi, I experienced a similar issue with GS2 i9100G. I also haven't found a clear and definite answer in the various forums I have been digging into.
To sum it up here's what I found:
Android 2.3.4 worked perfectly fine with GS2, but upgrade to 2.3.6 introduced a suspend mode bug. Basically Suspend mode would cause the system to enter a loop, thus the battery drain while in flight mode.
The best solution would be to downgrade/stay with Android 2.3.4 (when it ain't broke don't fix it).
Possible workarounds if you'd rather not fiddle with your OS version:
Wifi settings > advanced settings > Policy: Wifi always on (so as not to trigger suspend mode with wifi), then (optional) use a Battery Manager App to fine-tune the wifi activation. Wifi always on drains your battery, but less than the system loop if you're not constantly on the move.
Don't use flight mode, shut you phone at night and use a good old clock) (and redirect calls to your landline if you must)
Try and find the apps that require regular sync thru wifi and might be the sole culprit causing the system to enter the loop
Note that Android 2.3.4 is based on Linux kernel 2.6.32 and that Android 2.3.6 is based on kernel 2.6.35 which introduced a major power management regression.
The fix for this regression has not been fixed before current kernel 3.3 (although some developer may have backported the fix into 3.2), so I would advise to stay away from current Android 4.0.3 ICS which is based on kernel 3.0 (later versions will be based on kernel 3.2 though)
I am not sure if this is the root for the suspend mode bug or if both issues are independent, but in the meantime 2.3.4 works perfectly fine.
EDIT: upgrade to 2.3.6 then 4.0.3 really stand as blunders from Samsung on such high-end Smarphones. Regardless of the device, waiting for the upcoming Android version 4.0.5 seems the better choice if you want to enjoy ICS and not regret iOS...
Android 4.0.3, a version with well-documented problems, including the battery problem, rather than 4.0.5, which solves many of those problems?
Probably not. Probably, the slow nature of Android updates is to blame. It took six months for version 4.0.3 to wend its way through the system, meaning it could yet be months more before the updated update, version 4.0.5, reaches users.
Right now, it seems their only option is to go back to 2.3.6, just like they’re asking.
from Samsung users bitten by upgrade bug (May 7th, afr.com)
Click to expand...
Click to collapse
Suspend Mode bug causing flight/airplane mode to drain battery
After trying different things I came to the conclusion that it all comes down to apps who force themselves to run in the background when you install them and request frequent syncs (free apps will do whatever it takes to boost their ad revenue).
To me it's still a bug in the suspend mode (Apps shouldn't be allowed to request a connection while in Airplane mode, doing it triggers a loop of failed attempts) and Samsung overlooked it.
In the meantime the previous solutions I mentioned do work:
n°1 (lazy fast) - Wifi settings > advanced settings > Policy: Wifi always on (so as not to trigger suspend mode with wifi), then (optional) use a Battery Manager App to fine-tune the wifi activation. Wifi always on drains your battery, but less than the system loop if you're not constantly on the move.
n°2 (depends on the number of apps) - Try and find the apps that require regular sync thru wifi and might be the sole culprit causing the system to enter the loop
n°3 (last resort) - Don't use flight mode, try to turn off data instead or shut you phone at night and use a good old clock) (and redirect calls to your landline if you must)
Click to expand...
Click to collapse
A battery calibration shouldn't be of much help.
Eventually I read someone, with Android ICS 4.0.3 installed, who mentioned DTIM and explained that changing the default 5ms to 1ms solved his battery life problem (note that you usually set this parameter to the highest possible latency to save your battery on mobile devices)
this is by far the most interesting battery problem thread i have found in the past 2 weeks. this exactly describes the problem I've been having.
initially nothing was wrong for me either. straight out of the box went ok for months. i'm not sure, but i think it was 2.3.4. shortly after the stock official update (unbranded) update to android 4.0.3 i noticed the battery died in about a day, instead of 2 days.
things i tried thus far:
- flash 2.3.6 back. same problem.
- flash 2.3.4 back, same problem.
- since it sucks either way, i flashed the stock 4.0.3 again.
- disabled a whole ****load of apps i normally use. same problem.
- decided to root and flash dragonICS 4.0.4 with default siyah kernel
- swapped battery with a colleague who does not have this problem. same problem.
- reset battery thingy in extweaks, battery % reporting sucks big time since then, but essentially: same problem
- tried a lot of suggested tweaks in extweaks which are supposedly better. same problem.
- set syncing at a longer interval (even though it worked fine out of the box). same problem.
- disabling all the sensors i could (including rotation for the apps), wifi, data traffic in general. same problem.
- cut the light sensor polling interval in half (from 1sec to 2sec). same problem
- removed the SD-card, because god knows what conflict it could cause. same problem.
- removed sim card, since problems were reported between this phone, android4 and my provider. same problem.
- full battery drain and charge cycle. same problem
problem verification:
- battery monitor widget, which logs an obvious higher battery usage than my colleagues phone.
- badass battery monitor which clearly shows "kernel" and "android system" way up there, where it should never be.
- "system tuner" in the "task manager" section which shows "android system" and "/system/bin/surfaceflinger" using the most cpu time by far
- "cpu spy" shows the cpu most of the time in deep sleep, which looks pretty good to me.
i can see the android system is using a lot of time reading 2 sensors, which seem required by basic functioning of the device. screen rotating and brightness.
i am unable to find out what the kernel is doing with all it's time. but whatever the rom, it's doing something.
ps: not all tests were in this order or seperated as they are described.
better battery stats shows a few processes on top:
kworker/0:3
kworker/0:1
kworker/0:0
kworker/0:2
in this order
It was a hardware fault! Samsung replaced the planar, ... now it´s fine. Thanks to all replys and your help.
while i'm happy there is a solution i am wondering about the following:
how can software introduce a hardware fault?

Stock phone updated to 4.0.4 and now freezes too often + bad battery life again

Hi,
I got the OTA update to 4.0.4 a few days ago on my SGS2 (network O2).
Coincidentally I've been running with various launchers (Nova, Mii, ADW etc) but I decided to go back to TW. So I deinstalled them all at around the same time.
Anyway, since the update my phone has been playing up constantly. I've had random reboots whilst the phone has been in my pocket. I've had plenty of short and long freezes. The stock browser locks up quite regularly if I have many tabs open (or any one of them has many images). It also reports inability to connect to the proxy server (though I haven't got a proxy set up).
And to top it all off, my battery life seems to have gone back to being terrible (if I use the phone as a web browser for an hour or so can see 50% of the battery life go!) The battery usage indicates the screen and the internet are taking 75% and the OS only 6%, which is different from what I've seen before. The phone runs very hot sometimes - the screen can get too hot to hold my finger on.
So is this something anybody is seeing, or has my phone just freaked out? Is it worth a factory reset? Is it possible to force the 4.0.4 update to be re-applied? Anything else I can try?
Cheers,
Ross
I have observed the same after moving to 4.0.4. Especially stock browser likes crashing. Anyway, all crashes happen much often for me on ics than on gb.
When I've tried LPT I've noticed extrem battery consumption while using but no crashes.
My wifes phone had similar stuff Ross so we sent it back to Samsung.Was very hot around camera and was freezing a lot,and wireless hardly connected.
When it comes back Um sticking on GB like mines..
Sent from my GT-I9100 using xda premium
I experienced all of this you are saying. Tried a factory reset from stock cwm, but didnt solve anything. In this point I just downgraded to 4.0.3 and had the update to 4.0.4 LPT with kies. To my surprise, all things are good and stable.
Sent from my GT-I9100 using XDA Premium App
Both my wife and i have i9100's
i updated to 4.0.4 through kies - no issues at all
she update to 4.0.4 via OTA - freezes, gets hot, kills battery
Both phones unlocked unbranded
How do i down grade to 4.0.3?
kooli9 said:
Both my wife and i have i9100's
i updated to 4.0.4 through kies - no issues at all
she update to 4.0.4 via OTA - freezes, gets hot, kills battery
Both phones unlocked unbranded
How do i down grade to 4.0.3?
Click to expand...
Click to collapse
Flashing a 4.0.3 firmware trough odin
Thanks very much for all the replies :good:, it sounds like an Odin downgrade and then upgrade is the way to go, I'll try that tonight. And if that doesn't work I'll try using an older modem.
And if that fails, I'll go complain to O2.
Factory reset should solve that! I had similar problems after upgrade from GB to ICS, after FR all was right.
SGS_elko said:
Factory reset should solve that! I had similar problems after upgrade from GB to ICS, after FR all was right.
Click to expand...
Click to collapse
Never recommend factory reset to someone running stock 4.0.4 ROM on stock kernel
Swyped from my Samsung Galaxy SII
An update, in case anyone stumbles on this thread...
I chickened out of doing the Odin flash, as I googled for a 'how to' and saw it'd invalidate my warranty.
I'm aware there's a way to decrement the flash counter, but I'm a noob at this. I'll stay 'chicken' for moment.
So I did the easy thing... I ran my battery absolutely flat, then recharged the phone to 100%. It certainly seems better - maybe the battery state wasn't being detected properly and caused some issues?
Certainly I've stopped getting the overheating / rebooting / freezing / catastrophic battery life.
I'd be inclined to leave it as-is, but my battery life is still pretty poor compared to how it was... if I browse the internet for a short while (over wifi) I can see big chunks of my battery percentage disappearing.
So I'll go to the O2 store that's nearby, and see if the 'guru' can help me - either by okaying an Odin re-flash, or by sprinkling pixie dust on it or some such
I had another lock up and self-reboot, so I decided to take the plunge and re-flash it, which was relatively simple.
Fingers crossed it does the trick! But if it doesn't, well I can go back to 4.0.3 now.

[Q] 1) Upgraded from 2.3.3 to 4.1.2 by Samsung. 2) Battery hates me. 3) :( :( :(

4) and it's very very annoying... so much so that I sometimes (multiple times in a day, actually) wish to get back to Android 2.3.3, which I had before updating to Samsung's (India) version of Android 4.1.2 for my GS2.
What could be the problem? I rarely ever connect to WiFi (am always connected to GPRS/EDGE, but that has never been a problem in the last 2 years... the phone still used to get nearly a day of battery life) and the brightness is almost always at the lowest. I rarely use Bluetooth, GPS, etc. I don't even use Facebook and WhatsApp anymore, so the screen isn't used to the max. I've turned off all the Location Sharing settings for Google Maps and/or other apps (I use very few apps anyway, but have a bunch of them installed on the phone... none that execute in the background though | also not more than a couple new apps after my OS upgrade).
It's been nearly a week since upgrading the OS on my phone. Last night when I hit the bed at 1.15AM my time, the battery was at 100% (after charging). With no activity whatsoever in the night, the charge had dropped to 88% by 9.35AM. That's less than 8.5 hours of no use and 12% charge gone. That never was the case earlier.
Also, for each minute of using the phone with the screen on, I notice 1-1.5% drop in the battery. That is, to put it very very mildly, PATHETIC!!!
I don't know what to do. Would a "clean rom" install help? If so, what exactly is a "clean rom" install?
Or should I be doing something else?
Any help would be greatly appreciated.
P.S.: Please let me know if any other info is needed too. BIG BIG Thanks in advance to anyone reading this
5) Read about jb settings/issues.
Sent from the little guy
Hi OP,
I haven't been on the i9100 for that long, but have also been annoyed with short battery life. As have many others from what I read. A 12% drop over about 8 hours of sleep, I'm sorry to say, doesn't seem that bad actually for an SGS2 with stock jb 4.1.2 and stock battery.
Personally, I tried different lightweight ROMs that are known to spare your battery. The advice to turn off 3g and other core functions never made sense to me, as I want an operable phone, not some sort of deflated piece of junk.
After reading on xda I went through Slimbean , Liquidsmooth, and other ROMs to see if they would increase battery life.
My current ROM is NeatROM 4.8, which actually seemed to give better results. Please note that this is purely subjective, though, I have no fancy battery analyses to back up my statement.
What REALLY helped was getting a replacement battery.
I tried Qcell 1950 mAh batteries. Stay away from those. They are clearly not 1950 mAh. Now running with a genuine Samsung 2000 mAh which is worth every dime.
Now I imagine you would be frustrated having to buy a new battery just because you updated your firmware and I do understand. I never owned the SGS2 before jb, so my choice was simple I guess. That having been said, though, the 2000 mAh battery really turned the phone into a whole new sort of usable. It easily lasts through the day even with regular use.
Just my 2 cents.
Sent from my GT-I9100 using xda app-developers app
S2 battery life
jsiv said:
Hi OP,
I haven't been on the i9100 for that long, but have also been annoyed with short battery life. As have many others from what I read. A 12% drop over about 8 hours of sleep, I'm sorry to say, doesn't seem that bad actually for an SGS2 with stock jb 4.1.2 and stock battery.
Personally, I tried different lightweight ROMs that are known to spare your battery. The advice to turn off 3g and other core functions never made sense to me, as I want an operable phone, not some sort of deflated piece of junk.
After reading on xda I went through Slimbean , Liquidsmooth, and other ROMs to see if they would increase battery life.
My current ROM is NeatROM 4.8, which actually seemed to give better results. Please note that this is purely subjective, though, I have no fancy battery analyses to back up my statement.
What REALLY helped was getting a replacement battery.
I tried Qcell 1950 mAh batteries. Stay away from those. They are clearly not 1950 mAh. Now running with a genuine Samsung 2000 mAh which is worth every dime.
Now I imagine you would be frustrated having to buy a new battery just because you updated your firmware and I do understand. I never owned the SGS2 before jb, so my choice was simple I guess. That having been said, though, the 2000 mAh battery really turned the phone into a whole new sort of usable. It easily lasts through the day even with regular use.
Just my 2 cents.
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
yea.. u said it...even i have tried several custom roms ( NeatRom, WanamLite,RR etc) all give 15-19 Hrs max.. and this also by tweaking all the settings..
S2 is a undoubted beast, but the cost in terms of battery is very hight..my previous Android Motorola Defy was a Mammoth in itself..huge custom fanbase and loads of ROMS + Awsome battery.
Any ways i got no regretts for having a S2..but battery s a lil concern..
Currently am on Asnet MIUI V5 and its going good..fast, responsive, smooth and decent battery of 18 hours avg..
@jsiv - i wanted to ask u a question.. which country u hail from ?? because the stock 2000 mah battery is not available in India, my region.
Cheers:angel:
Do you calibrate battery after every ROM change?
Sent from my Nexus 4 using xda premium
gastonw said:
5) Read about jb settings/issues.
Sent from the little guy
Click to expand...
Click to collapse
Can you please point me in the "settings" direction? I think I'm doing all things right, going real low on app usage, sync-ing of apps, screen settings, etc.
vish91 said:
Do you calibrate battery after every ROM change?
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
What exactly is battery calibration here? Please pardon my ignorance. I did a full charge when my phone hit got switched off the day after upgrading the OS. Is there something else I must be doing here?
I've had this problem right after the upgrade. So, I don't think it's an issue with my battery per se. It could just be JB.
How good is the Cynaogen Mod ROM in terms of battery life?
Or would it be wiser to switch to Android 4.0/ ICS?
I live in Denmark. I ordered it off Ebay, but I see now that the UK shop I got it from doesn't ship to India.
You searched Ebay for "Samsung genuine 2000 mAh battery" or similar?
Sent from my GT-I9100 using xda app-developers app
theultimate1 said:
Can you please point me in the "settings" direction? I think I'm doing all things right, going real low on app usage, sync-ing of apps, screen settings, etc.
What exactly is battery calibration here? Please pardon my ignorance. I did a full charge when my phone hit got switched off the day after upgrading the OS. Is there something else I must be doing here?
I've had this problem right after the upgrade. So, I don't think it's an issue with my battery per se. It could just be JB.
How good is the Cynaogen Mod ROM in terms of battery life?
Or would it be wiser to switch to Android 4.0/ ICS?
Click to expand...
Click to collapse
Cyanogenmod roms are very fast ROM they are good as hell
Ur problem is genuine go to the playstore and download battery calibration app and follow the instructions in the app charge or battery up to 100 % and caliberate the battery u should have made an nandroid backup before upgrading
Sent from my Galaxy Nexus using xda premium
theultimate1 said:
Can you please point me in the "settings" direction? I think I'm doing all things right, going real low on app usage, sync-ing of apps, screen settings, etc.
What exactly is battery calibration here? Please pardon my ignorance. I did a full charge when my phone hit got switched off the day after upgrading the OS. Is there something else I must be doing here?
I've had this problem right after the upgrade. So, I don't think it's an issue with my battery per se. It could just be JB.
How good is the Cynaogen Mod ROM in terms of battery life?
Or would it be wiser to switch to Android 4.0/ ICS?
Click to expand...
Click to collapse
Battery calibration: http://forum.xda-developers.com/showthread.php?t=1312273
This has to be done every time you do a ROM upgrade or change ROMs.
CM has excellent battery life when compared to other ROMs.
If you are switching over to ICS stay away from version 4.0.4 as it has EMMC brick bug.Any other version would be fine.
theultimate1 said:
4) and it's very very annoying... so much so that I sometimes (multiple times in a day, actually) wish to get back to Android 2.3.3, which I had before updating to Samsung's (India) version of Android 4.1.2 for my GS2.
What could be the problem? I rarely ever connect to WiFi (am always connected to GPRS/EDGE, but that has never been a problem in the last 2 years... the phone still used to get nearly a day of battery life) and the brightness is almost always at the lowest. I rarely use Bluetooth, GPS, etc. I don't even use Facebook and WhatsApp anymore, so the screen isn't used to the max. I've turned off all the Location Sharing settings for Google Maps and/or other apps (I use very few apps anyway, but have a bunch of them installed on the phone... none that execute in the background though | also not more than a couple new apps after my OS upgrade).
It's been nearly a week since upgrading the OS on my phone. Last night when I hit the bed at 1.15AM my time, the battery was at 100% (after charging). With no activity whatsoever in the night, the charge had dropped to 88% by 9.35AM. That's less than 8.5 hours of no use and 12% charge gone. That never was the case earlier.
Also, for each minute of using the phone with the screen on, I notice 1-1.5% drop in the battery. That is, to put it very very mildly, PATHETIC!!!
I don't know what to do. Would a "clean rom" install help? If so, what exactly is a "clean rom" install?
Or should I be doing something else?
Any help would be greatly appreciated.
P.S.: Please let me know if any other info is needed too. BIG BIG Thanks in advance to anyone reading this
Click to expand...
Click to collapse
As reported before, it seems that many official JB ROMS are not as optimized as other national versions and are battery hungry. It was suggested to upgrade to the French release (XEF).
vish91 said:
Battery calibration: http://forum.xda-developers.com/showthread.php?t=1312273
This has to be done every time you do a ROM upgrade or change ROMs.
CM has excellent battery life when compared to other ROMs.
If you are switching over to ICS stay away from version 4.0.4 as it has EMMC brick bug.Any other version would be fine.
Click to expand...
Click to collapse
I did this... and unfortunately, it did nothing in my case.
I went to the CM site, but I didn't find any stable build for SGS2. Is there a thread on this site I can refer to for the same?
Also, what's the best way to go about installing a different ROM? I have so many apps, sms messages, pics, mp3 files, 3gp files, etc. Sure I can take a back-up onto my SD card. But won't I lose all the apps once I flash the current Android installation and install a new ROM? Any article or video on YouTube that addresses these points? Please point me in the right direction. I practically don't use my phone even half as much as before and I'm having to charge it twice a day, as against once a day earlier.
Also, the rapid battery loss seems to be causing the phone to heat up a lot if I'm on a call longer than 15 minutes or having the screen on for 2-3 minutes straight.
theultimate1 said:
I did this... and unfortunately, it did nothing in my case.
I went to the CM site, but I didn't find any stable build for SGS2. Is there a thread on this site I can refer to for the same?
Also, what's the best way to go about installing a different ROM? I have so many apps, sms messages, pics, mp3 files, 3gp files, etc. Sure I can take a back-up onto my SD card. But won't I lose all the apps once I flash the current Android installation and install a new ROM? Any article or video on YouTube that addresses these points? Please point me in the right direction. I practically don't use my phone even half as much as before and I'm having to charge it twice a day, as against once a day earlier.
Also, the rapid battery loss seems to be causing the phone to heat up a lot if I'm on a call longer than 15 minutes or having the screen on for 2-3 minutes straight.
Click to expand...
Click to collapse
There is no stable version of CM 10 on I9100 because of the some issues. You can flash one of the nightly builds.They might not be necessarily unstable.
No you wont be losing everything when you install a new ROM.You lose once you do a data wipe.It is suggested you wipe everything before you install a new ROM.
With a data wipe you'll lose the following - SMS,contacts,call logs,apps installed and respective data.
What you wont lose - Anything stored in the sdcard partition - Pictures, Videos, Music, Apk files and Anything stored on the Ext SD card.(unless you format them specifically)
Best solution is to use titanium backup app(You need root). This way you can backup your apps and resp. data,wipe data-install ROM,and restore the previous backup on the new ROM.
Tutorial : http://forum.xda-developers.com/showthread.php?t=1972455
As far as the battery issue is concerned,do a clean ROM install through Odin.
Index of guides : http://forum.xda-developers.com/showthread.php?t=1826497

[Q] 2.3.4 vs 2.3.6

Hello,
I'm running 2.3.6 now and I wonder if I switch to 2.3.4 will I have less battery drain? Are there any functional lacks on 2.3.4 comparing to 2.3.6? However, I use GO Launcher on rooted phone.
blackfire74 said:
<snip>
Click to expand...
Click to collapse
Well next time please do post questiona in the general sub forum Anyway I think it is better to just update to 4.1.2 since you are rooted anyway. I get better battery life and signal on 4.1.2 compared to 2.3. My choice of a rooted stocked based rom would be NeatROM Lite by Sale :good:
I agree. Generally, upgrading rather than downgrading will increase performance so I would just go wit a higher version. Also, if you feel you have an unnatural battery drain, there are other options except switching versions to handle that. Maybe it is one of your apps that causes the battery drain. Other possibilites are sync cycles or kernel. If you switch to another kernel that might help your problems better than switching ROMs (although switching ROMs is always recommended, just for the fun of it )
gulypi which
I don't know if I am doing something wrong, but I just flashed NeatRom 5.0 and the battery life is terrible.
From my point of view, 2.3.4 stock with speedmod kernel was the best with my s2. I had battery life for 2 days. With latest roms I have battery life for max. 24h. I always did a clean install with factory reset. Don´t know why the battery life is so bad with my phone.
But now I ll give it another try. I will format the whole phone and try sentinel rom again which i liked most
NeatRom 5.0 killed my battery also. Trying 4.9 for now as I jumped from 4.6. If it's buggy I will switch back to 4.6
Sent from my GT-I9100 using XDA Premium 4 mobile app
Media scanner fix for battery problem on neat ROM should fix this. Also Apollo kernel is great mix with any stick Sammy ROM.
I don't know why flash modded kernels (at least if you are about to have better battery life, not other mods)? I have plain stock GB 2.3.6 XWKL1 (DDKL1) and just use Go Power Master, Set Cpu and calibrated battery.
At first when I went back from ICS to GB battery lasted for 14hrs. I charged battery fully on and battery "learned" new system and went up to 23hrs. Then I calibrated battery: fully discharge till phone went off, again started, playing till off again and again till it won't on. Then without turning it on I charged battery fully, unplugged charger, waited till battery went to 99% and plug in charger again till 100%, and again. I was using WiFi over half time of usage, flight mode at nights, play wit phone settings, installing apps, browse internet a little, use as phone as usual, listen a music a little, browse photos, etc, and battery lasted for 39hrs on stock battery which previous owner using for last two years and he didn't care about healthy battery usage. I got Samsung Extension Pack with 2000mAh Battery and flat back panel but it waits for new S2 I bought yesterday. I will put new battery after ROM flash and get all restored to state I have now, then I calibrate that bigger battery for new phone.
But anyway, question was if someone was playing with 2.3.4 and 2.3.6 stock ROM's in order to achieve better battery performance? I read somewhere that guy had over 4 days on stock battery and 2.3.4 GB. So I wonder if I switch to 2.3.4, which may be probably less demanding system than 2.3.6, will I get more time on one charging? I don't care about how it may or not look like cause I use GO Launcher anyways, but does it have same stuff and functionality as 2.3.6?
The problem with comparing your phones battery life is that it's depending on too many variables. You can't just say 'My phone lasted 30 hours with this and that usage', because everybody is using it differently. If you really want to test it, flash both versions yourself and try.
andrewwright said:
Media scanner fix for battery problem on neat ROM should fix this. Also Apollo kernel is great mix with any stick Sammy ROM.
Click to expand...
Click to collapse
Can't find "media scanner fix" in the market. Any chance of a link.
Sent from my GT-I9100 using XDA Premium 4 mobile app
In addition to Donnie's very good point, you're asking about 2yr+ old firmware. Do you realise how few people on a site like this are actually running firmware that old ? You'd probably find a fair number of 'ordinary phone users' out there who are still running GB because they may not be technologically au fait enough to do an OTA update.
At the end of the day, changing firmware to squeeze every last drop of battery life becomes a game of diminishing returns in that you can spend a lot of time to get that last tenth of a % of use out of every charge. You have to ask yourself is it really worth it, or is it worth simply enjoying your phone & chucking it on charge every night (or if you really chew through battery, getting a spare).
MistahBungle said:
In addition to Donnie's very good point, you're asking about 2yr+ old firmware. Do you realise how few people on a site like this are actually running firmware that old ? You'd probably find a fair number of 'ordinary phone users' out there who are still running GB because they may not be technologically au fait enough to do an OTA update.
Click to expand...
Click to collapse
Well, the thing is I don't understand why people update their phones and then complain about battery life if 2.3.6 works fine from what I observe here and there.?
As per Donnie's post, there's too many variables involved to say 'This Android version will definitely give you better battery life than that version'. Personally, I get better battery life out of JB roms than I ever did out of GB or ICS roms, not that I got poor battery life out of either of those though. And the reason for that is I worked at it.
There's no magic simple A-B-C to better battery life, regardless of what rom/kernel/Android version you're running, you have to experiment & try stuff out to find out what works with the way you use the phone/have it setup.
People who complain about battery life & attempt to pin it on the particular Android version they're running tend to have a really poor understanding of 'how it all works', because it isn't that simple as I've said.
blackfire74 said:
Well, the thing is I don't understand why people update their phones and then complain about battery life if 2.3.6 works fine from what I observe here and there.?
Click to expand...
Click to collapse
People can also update their phones because of other reasons than battery life. ICS was the best for me with battery usage, but after JB downgrading isn't an option for me as I would miss to many new features and other additional functions.
The choice is yours to make. If you are satisfied now, I would stick to 2.3.6 if I where you. If you are curious about other versions -newer or older- try those

Categories

Resources