Database Users

Super bad battery drain!

My galaxy was fully charged at 3 today and since then I've been checking every hour how much its dropped and its seems that by every hour it drops by 11%!!!
I'm using darkys rom v8.0 with with speed mod k12p kernel and jp5 modem. I've tried all the 'battery fixes' and they don't even at all seem to work.
So any ideas what to do...?
Sent from my GT-I9000 using XDA App

I'm using darkys rom v8.0
Expected battery drain read Darkys faqs .
jje

Different Rom and Kernel? I use the standard Rom with Voodoo kernel, its fast and lasts 2 day's on one load.

What standard rom? Hmm ive tried voodoo's kernel with darkys but still bad battery drain :/ what modem do you use?

Get power tutor from the market and run it for a few days. Have you downloaded any new apps/widgets lately?
doc v7.x.x, jpy, voodoo 5.1, va orange.

Ill try that then ans Ermm not really just a few games..but then uninstalled aha

Try green power app. No need to configure much I am also on Darky 8.0 and some kernal I flashed I don't remember what
Now if I forget to charge my phone at night I don't wake up to a dead phone

Ooh I'll try that too!
Thanks

Most likely it's your email app. Try your phone without email sync for a few days. Delete all email accounts and give it a try.
Sent from my GT-I9000 using XDA App

If you've flashed a new rom recently that usually happens. Give it a couple of days and it should be ok. Just run it down a couple of times then it should be good.
Sent from my GT-I9000 using XDA App

burtyy said:
My galaxy was fully charged at 3 today and since then I've been checking every hour how much its dropped and its seems that by every hour it drops by 11%!!!
I'm using darkys rom v8.0 with with speed mod k12p kernel and jp5 modem. I've tried all the 'battery fixes' and they don't even at all seem to work.
So any ideas what to do...?
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
My experience with Darky ROM is that it eats your battery very fast overall. Stopped using it. My phone's current uptime is 70 hours from last charge and still running with 3% battery with normal use. Try Doc's rom from the kitchen.

i agree.. i cooked up my own custom rom from Doc's kitchen. (xwjs3) at present. my battery life is fantastic and i abuse my phone all day everyday and charge it every 2 days.

xero2002 said:
Most likely it's your email app. Try your phone without email sync for a few days. Delete all email accounts and give it a try.
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
I never sync my email so don't thinks thats the problem. :/
I think I'll just ditch darkys rom for now and wait until he releases a better version
So what rom do you suggest I use now? I mainly use my phone for the internet, music and games.

Best way to know if its darky's ROM borking your battery is to flash a stock rom and just test it for a day.

azzledazzle said:
i agree.. i cooked up my own custom rom from Doc's kitchen. (xwjs3) at present. my battery life is fantastic and i abuse my phone all day everyday and charge it every 2 days.
Click to expand...
Click to collapse
Which modem do you consider to have the best battery life? JPY? or any other modem? (for europe, germany)

Quite an amazing thing i discovered today. Was just flashing different kernels and suddenly from 20% my charge went to 60%. Wiped battery stats it came down to 10%. Flashed another kernel... Went upto 50%. Wiped battery stats remained at 50%. Now after 15 mins its down to 39%. Used kernel flasher with all the kernels on the sd card and not thru odin. Anyone any explanations? Using stock 2.2.1 jpy with Jp6 modem. tried speedmod, voodoo 6.66 and another kernel.
Sent from my GT-I9000 using XDA App

Awful Awful battery life since Darky's ROM

I have always had stock ROMS with my i9000, ending with JS7. I read the battery problems people had and I always counted myself very lucky that my phone had a pretty decent battery life.
Daily I would SMS (a lot), the odd phone call, quick blip on the internet (3g), lots of angry birds and doodle jump! I would get at least a couple of days before it went into the red.
Then I made the big mistake of installing Darky's ROM, it looks nice and feels a bit snappier, but now the battery is in the red in the evening after a full nights charge. This is even after severely curbing my phone use to try and extend the life. I have tried all the wiping tips and tricks too.
Same apps, different ROM. Darky's is an absolute nightmare for me and I will be going back to stock.
So is the ROM just another variable in the mix of battery issues, or the main offender?

Hello. I've the same battery drain, and I think it's very annoying when at evening you need to charge it again without using strongly the phone. Otherwise the Darky's rom, (I'm on 9.3) is very nice and marvellous, but this battery drain issue makes it worse.
Sent from my GT-I9000 using XDA App

Have you tried using spare parts to see which app is sucking baster or cpu? Did you download the rom configure tool from the market? Which gallery did you instal worth the rom?
Sent from my GT-I9000 using XDA App

stierney said:
Have you tried using spare parts to see which app is sucking baster or cpu? Did you download the rom configure tool from the market? Which gallery did you instal worth the rom?
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
This and:
have you let the phone drop below 10-5%?
Flashing screws up the battery indicator (how much depends) and it calibrates itself while in use. Letting the battery fall, or even the phone shut down by itself can speed up the process quite a bit. This helps only if there is no battery hungry app that's eating all your powrz though.

I haven't tried to see if there is an app sucking the life out of it because I never had any issues under the 3 or 4 stock roms and I haven't d/l any other apps. The battery deterioration started instantly I flashed with Darky's. I don't know which gallery it is, it came with the d/l. What ever it is, it doesn't work! No, didn't use the configuration tool.
I must admit I haven't let it run under 10% as I want my phone with me working. But wouldn't this manifest itself when I updated the stock firmwares?

the_chinaman said:
I haven't tried to see if there is an app sucking the life out of it because I never had any issues under the 3 or 4 stock roms and I haven't d/l any other apps. The battery deterioration started instantly I flashed with Darky's. I don't know which gallery it is, it came with the d/l. What ever it is, it doesn't work! No, didn't use the configuration tool.
I must admit I haven't let it run under 10% as I want my phone with me working. But wouldn't this manifest itself when I updated the stock firmwares?
Click to expand...
Click to collapse
ok mate, firstly search the market for the Darky Rom Configurator, shoudl be easy to find, you shoudl be able to reflash without wiping all your apps, run the config app first and pay special attn to the 'Lockscreen wallpaper' of the tool, there aint many options to choose. Got the gallery drain bit mixed up, sorry tired
If i was on my own PC id give a bit more detail but its pretty straight forward.
Im running 9.3 and get a full days mid-heavy use, i normally go to bed at 10-15% which is fine with me

cheers for the advice mate, I've just grabbed the app so I will do the flash in the morning.
I will report back my findings!

Just a thought but Darky's Rom uses JS5 and wondering if has something to do with the modem? Just a theory but wondering if you could replace back to JS7 and see if that helps. Just a thought. I'm used to a day's worth of battery myself these days.

The faster you make the phone go the more power you use darkest Rom are ok but messed with too much

I got really bad battery life for the first few weeks using darky. But now the battery life seems to be longer and more stable and average. I did do calibrations a few times tho.
Sent from my GT-I9000 using XDA App

You won't get better battery with Darky ever.
I played around quite a lot, 9.2, 9.3, calibration, fresh system, darky rom configurator, different kernels, lagfixes, no matter what, my battery drain was mad. It's a quick and smooth rom, but that's the downside of it.
I switched back to Doc's rom via kithen with same kernel, and quess what? No calibration, no playing around, nothing special I did and battery life is brilliant! Of course it lags here and there, that's Doc's drawback(no lagfix applied tho)

You will often find that if you flash a number of roms you get battery drain . Apart from the actual rom itself you need to flash to a clean firmware reset battery stats use a suitable modem charge battery once using bump charge method then wait a few weeks for it to settle down .
I am using rom kitchin since Darkys killed my battery life months ago .
JPY and JPY modem no complaints about excess battery life .
But i did flash back to clean stock before custom rom and wipe everything .
http://forum.xda-developers.com/showthread.php?t=817703
jje

but this is true even if i use a kernel mod.. instead of a full flash? i think that a stock rom with custom kernel made for battery lasting is better... or not?

Have u all tried Battery Bump Charging?
Hi, I am not a Galaxy S owner but I am doing a research on this issue for a friend.
I am a Milestone user and I am a ROM slut (I flash many ROMs back and forth)
So I am very familiar with cases where after flashing a new ROM, your 100% fully charged phone is actually 60%/
Here is a posting on a few ways you can do a battery bump charge. When you perform this battery bump charging technique, u will be surprised to see that your 100% fully charged battery is actually not 100%
http://forum.xda-developers.com/showthread.php?t=978090

Subject : the i9000 battery

Ive drained my battery three or four times now left off charged unplugged and booted and then plugged back in to give 100%. Following that i went into recovery and reset battery settings. The problem continues to presist by nights end im at 25% or under for battery life .. What todo
Am i being anal or should i be getting aleast two full days?
Im using darkys 9.5 default no over clock
Thank you
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Am i being anal or should i be getting aleast two full days?
Im using darkys 9.5 default no over clock
Try reading the posts on that roms pages known problem with Darkys is battery drain .
jje

Thanks for responding .
What rom would you recommend?
Sent from my GT-I9000 using XDA App

What kernel are you using?? im on 9.3 with dark core 1.4,, i find in take sometimes weeks to see the full result of battery after changing roms/ kernels.. My opinon is darkys 9.3 with speedmod K13c kernel was the best setup, still after wiping batt stats it was a week b4 the full potential of the battery was seen. Also make sure you follow the steps to wipe battery,, ie turn fone off and charge to full then extra 1/2 hour b4 wiping stats.

Personal recommend is not any Darky rom reason most help posts on here are that rom .
I use Rom Kitchen and build my own rom .
http://forum.xda-developers.com/showthread.php?t=817703
jje

I would recommend A darkyrom!
I am now on 9.5 with the 1.4 Darkcore Kernel and my battery lasts for 2,5 or 3 days.
I have wifi or 3g enabled (the whole day besides night), gmail on push and facebook sync.
I use it as mobilphone in my job so i have many calls a day.
hamti

hamti007 said:
my battery lasts for 2,5 or 3 days.
I use it as mobilphone in my job so i have many calls a day.
Click to expand...
Click to collapse
You must have one of those batteries that run on pure magic.

I have recently started running Darky's Extreme Edition v9.5 with speedmod kernel, and so far battery life has been fine. 3G is on all the time with wifi on for a few hours a day.

Thanks boyz & girls
I installed dark core 1.4 ; see how that works
Sent from my GT-I9000 using XDA App

Cm7.2 Battery Drain

I flash CM7.2 few days ago and I'm fall in love with it
But, 5 days later, I'm not impressioned with battery life on CM7.2. It is better on stock ROM I cleared battery stats after flashing, but battery duration is not improved. CPU governor was INTERACITIVE and battery have life duration about 6-7 hours with low/medium using. Unacceptable!
Then, I change CPU governor to ONDEMAND and battery is better for a 1-2 hours. But, not better enough. 8-9 hours with medium usage is still smaller than with stock ROM (12-13 hours)
I won't to restore stock ROM, a love CM...
My dipslay have brightness around 30% (on stock was on 50% or on auto) and I thing that there is some issues with brightness in CM7.2.
Before I reboot phone, battery level was around 60%. When booted again 66%. Few minutes later, it was 60% again. That you can see on screenshot.
Every morning when I wake up, CM showing battery level for 1% smaller than 8 hours ago. But, 10-15 minutes later, it drain 10-15% battery.
I'm using stock kernel.
May someone help me to fix this?

Wipe the phone again and flash the rom again

****head said:
Wipe the phone again and flash the rom again
Click to expand...
Click to collapse
Are you sure that reflashing will solve problem?

Did you flash another kernel ?
I'm running CM7.2 for about 4 months now, and previously RC1, RC2 and 7.1, and I'm not having any issue.
I use the interative governor (min 245, max 1024), I get at least a 12 hours battery life upon normal to heavy use.
If I don't use a lot my phone, I can get up to 36h.
I remember I tried LordModUE 8.9b7 kernel and the battery life was better and performance excellent (governor was smartassv2).

ciberbeb said:
Did you flash another kernel ?
I'm running CM7.2 for about 4 months now, and previously RC1, RC2 and 7.1, and I'm not having any issue.
I use the interative governor (min 245, max 1024), I get at least a 12 hours battery life upon normal to heavy use.
If I don't use a lot my phone, I can get up to 36h.
I remember I tried LordModUE 8.9b7 kernel and the battery life was better and performance excellent (governor was smartassv2).
Click to expand...
Click to collapse
How to change kernel from stock to LordModUE?
Thanks

1. Download the last available kernel : http://forum.xda-developers.com/showthread.php?t=1085725 or directly : http://blackice.omca.co.uk/download...ger-kernels/lordmodUEv8.9-CFS-b7-2WCR-TUN.zip
2. Put the zip on your sdcard
3. Reboot into recovery
4. Make a nandroid backup !!
5. Flash the kernel
6. Reboot and enjoy
EDIT: another good thing is to use currentwidget (https://play.google.com/store/apps/details?id=com.manor.currentwidget&hl=fr), do a full charge until you reach 0mA, then reboot into recovery, wipe your battery stats, let your phone reach 0mA again, then unplug your phone. This should fully reset your battery, and let your ROM properly calibrate it.
Thanks to that post : http://forum.xda-developers.com/showthread.php?t=1226016

I installed Kernel from your link but in about phone menu, there is version:
2.6.35.14-cyanogenmod-g295e82f
[email protected] #1
Is this correct?
EDIT: After flashing, my Wi Fi not work... There is ERROR when open Wireless & Networks...
EDIT2: I reflashed kernel, wipe/factory, wipe cache, but i cant start Wi fi
What to do?

Reflash the rom, after wipe/factory.

tonn3k said:
Reflash the rom, after wipe/factory.
Click to expand...
Click to collapse
Ok, just doin' that

With my DHD LordModUE kernel wont to start Wi Fi. I tried earler versions and result is same

mikronac.ns said:
Ok, just doin' that
Click to expand...
Click to collapse
Yes.
I was on CM7.2 a few weeks ago. I got pretty good battery life. About 2 full days.
I only used 2G & WiFi.

One thing you have to know about flashing a new kernel is that you absolutely need to first boot the ROM with its original kernel first !
As you seem to have many problems, you should:
- full wipe/factory reset, reformat everything except your sdcard
- check the md5sum of the zip (rom especially) on your sdcard
- be sure your battery is fully charged
- flash the rom
- boot it, do not link with your google account
- let your battery charge again
- wait a few minutes
- unplug your phone and reboot
- link your google account
- test if you still have a battery drain but do not install any application, as some of them could cause your battery issue
- make a nandroid backup
- flash the other kernel if needed
- restest battery draining
Hope it'll help !

I did all what you write to me. Now, i testing battery life.
Sent from my Desire HD using xda app-developers app

mikronac.ns said:
I did all what you write to me. Now, i testing battery life.
Sent from my Desire HD using xda app-developers app
Click to expand...
Click to collapse
If you're still having battery drain after following all the useful tips you were giving, it's a possibility it could be the battery it self. You may want to try a different battery to see if you get better results.

It's not possible because it works good on stock rom 6 days ago...
Sent from my Desire HD using xda app-developers app

mikronac.ns said:
It's not possible because it works good on stock rom 6 days ago...
Sent from my Desire HD using xda app-developers app
Click to expand...
Click to collapse
My Inspire has CM7 right now and the battery life is great, so I don't know why you're having issues then.

Dont know
I tried everything... now, I'm on battery for 2 hours and my battery level is 83%... wifi on, display brightness 25%...
Sent from my Desire HD using xda app-developers app

mikronac.ns said:
Dont know
I tried everything... now, I'm on battery for 2 hours and my battery level is 83%... wifi on, display brightness 25%...
Sent from my Desire HD using xda app-developers app
Click to expand...
Click to collapse
Sorry, just lurking. Do you have a GB radio? I've found that running an ICS radio w/ CM7 causes overheating & major battery drain on some devices.
BTW I know nothing about your device.
Sent from my Incredible 2 using xda app-developers app

I have GB radio...
Sent from my Desire HD

mikronac.ns said:
I have GB radio...
Sent from my Desire HD
Click to expand...
Click to collapse
Did you change to a bright screen background or do anything differently?
Batteries can go bad fairly quickly.
You could always reflash. Sometimes a fresh wipe is nice (no pun intended)
Sent from my Incredible 2 using xda app-developers app

s2 in jb 4.1.2 battery life

hi. I am o supernexus build 5 wth siyah kernel. I got round 7 hiurs if heavy usage on gs2. I've done facebook, viber, internet using stock browser and downloading around 200mb zip file. what can you say about this battery life. its my first time to use gs2 and I am using 2000mah. the battery life seems pretty bad in my opinion. I will attach screenshot of my hardware info, battery use and screen time. hoping for any opinions out there
Sent from my GT-I9100 using xda app-developers app

I think is good , for me with stock battery (1650mah) i get 3 hours and 30-40 minutes (screen on time), wifi on , screen brightness auto
Send from my SGS2 I9100 with HassanROM and latest DorimanX 8.xx kernel

I think the battery life should be better with a 2000mah battery..
Is the battery properly callibrated??

krazy1101 said:
I think is good , for me with stock battery (1650mah) i get 3 hours and 30-40 minutes (screen on time), wifi on , screen brightness auto
Send from my SGS2 I9100 with HassanROM and latest DorimanX 8.xx kernel
Click to expand...
Click to collapse
oh really that means I should be getting better because I am on 2000mah but it seems not. Im not sure what's the problem if its the battery or the kernel. I also used an ICS firmware from Samsung I9100TDULP4. I don't know if that affects the battery life
Sent from my GT-I9100 using xda app-developers app

peRFect! said:
I think the battery life should be better with a 2000mah battery..
Is the battery properly callibrated??
Click to expand...
Click to collapse
Well I dont know if it is properly calibrated. By the way I got this unit from my uncle so I am not really sure if the battery is still good. How do we know if its still good. I dont know how old is this battery. How do we calibrate the battery and does the room affect this battery life?
Sent from my GT-I9100 using xda app-developers app

by the way I just installed this rom A week ago. The battery takes 3-4 hours to be charged using my xperia charger
Sent from my GT-I9100 using xda app-developers app

I have suggestion for you , go to miuiandroid.com and download the latest build , install Siyah Kernel v6.0b5 with that and you will love the battery timing on that (Trust me, i am using it right now)

Mr.KiLLeR said:
I have suggestion for you , go to miuiandroid.com and download the latest build , install Siyah Kernel v6.0b5 with that and you will love the battery timing on that (Trust me, i am using it right now)
Click to expand...
Click to collapse
you mean downloading the miui rom? yeah definitely I'll give it a try after slimbean which I will try if I see no improvement on the bAttery. Has anyone had 2000mah and siyah kernel with supernexus rom build 5? What are your timings?
Sent from my GT-I9100 using xda app-developers app

infinitylook said:
you mean downloading the miui rom? yeah definitely I'll give it a try after slimbean which I will try if I see no improvement on the bAttery. Has anyone had 2000mah and siyah kernel with supernexus rom build 5? What are your timings?
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
I have tried Slim Bean too and after trying that i came to Miui Rom

anyone who have experience with 2000battery
Sent from my GT-I9100 using xda app-developers app

anyone who have experience with 2000battery
Sent from my GT-I9100 using xda app-developers app

right now I am using the original 1650 mah stock battery of s2. I've been doing a lot of file transfers as of this moment via e.s. file explorer and currently I am transferring almost 13gb of data via wifi from my laptop. its been awake for 4 hours now with screen time of 1 hour and 30min. e.s. file explorer is keeping the system awake for 3 hours. I did some facebook and viber chats. screen at 35% brightness.. do you think this is the expected life of the stock battery? I am fairly new to samsung and I found the battery life to be disappointing even with the stock jelly bean rom from samsung. I will post some pics of the battery stats and cpu stats from cpu spy. another thing though. is there a good app from the market where I can test my two batteries and compare them? thank you
Sent from my GT-I9100 using xda app-developers app

infinitylook said:
right now I am using the original 1650 mah stock battery of s2. I've been doing a lot of file transfers as of this moment via e.s. file explorer and currently I am transferring almost 13gb of data via wifi from my laptop. its been awake for 4 hours now with screen time of 1 hour and 30min. e.s. file explorer is keeping the system awake for 3 hours. I did some facebook and viber chats. screen at 35% brightness.. do you think this is the expected life of the stock battery? I am fairly new to samsung and I found the battery life to be disappointing even with the stock jelly bean rom from samsung. I will post some pics of the battery stats and cpu stats from cpu spy. another thing though. is there a good app from the market where I can test my two batteries and compare them? thank you
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
To callibrate battery..first completely drain the battery to about 5%, then charge the phone non stop without disturbing it till 100% and immediately remove the charger..again fully drain the battery and follow the above steps and u will get better battery life after a few cycles!
About roms..battery life does differ from rom to rom...i suggest u could check the custom kernels packed with zzmoove governor, ithat particular governor definitely improves the battery backup!
And in the above post es file explorer is eating ur battery..for that u should download greenify and hibernate apps continuously running in background!

great. I will follow your steps. one more thing. how can I know if the battery is still good or if its still holding the proper charge its suppose to have? thanks
Sent from my GT-I9100 using xda app-developers app

best I can get is about 3 days standby in jb stock.

I use the 2000mAh battery is primary battery.. no big surprise to expect here, capacity is just 21% more by construction...
With wifi on, JB burns in my case about 3% in IDLE.. stock kernel.. and about 5% in 3G mode, IDLE.. then battery drains more or less fast depending on screen on, phone calls etc. I use the phone extensively for work (email sync & replies, phone calls, sms and voip) and i have to topup the battery twice or trice a day!
Have tried various custom kernels with all sort of magic to reduce battery drain.. more or less effectively.. sometimes with less stability.
Right now trying out latest dorimanx 8.27.. seems thatn IDLE with WIFI on drains around 2% per hour.. better than stock.. still not quite awesome
I miss the GB battery life.. but JB is so beautiful in comparison, I cannot go back!

jmarcnms said:
I use the 2000mAh battery is primary battery.. no big surprise to expect here, capacity is just 21% more by construction...
With wifi on, JB burns in my case about 3% in IDLE.. stock kernel.. and about 5% in 3G mode, IDLE.. then battery drains more or less fast depending on screen on, phone calls etc. I use the phone extensively for work (email sync & replies, phone calls, sms and voip) and i have to topup the battery twice or trice a day!
Have tried various custom kernels with all sort of magic to reduce battery drain.. more or less effectively.. sometimes with less stability.
Right now trying out latest dorimanx 8.27.. seems thatn IDLE with WIFI on drains around 2% per hour.. better than stock.. still not quite awesome
I miss the GB battery life.. but JB is so beautiful in comparison, I cannot go back!
Click to expand...
Click to collapse
Does Jb stock for you has better life or does custom rom have more? I really like the custom roms but as per observation stock rom offers more battery time. Right now I just reverted to stock rom i9100xwlss. Touchwiz really sucks. Supernexus is really beautiful but offers less battery (but I will have to try yet their latest build). Also one of the reasons for going back to stock is the camera shot quality. Custom roms really have poor camera quality. I guess when it comes to lowlight shots the stock roms are best. So much for that. Does stock rom offer more battry for you or custom rom does?
Sent from my GT-I9100 using xda app-developers app

SGS2 Battery Life on 4.1.2
infinitylook said:
hi. I am o supernexus build 5 wth siyah kernel. I got round 7 hiurs if heavy usage on gs2. I've done facebook, viber, internet using stock browser and downloading around 200mb zip file. what can you say about this battery life. its my first time to use gs2 and I am using 2000mah. the battery life seems pretty bad in my opinion. I will attach screenshot of my hardware info, battery use and screen time. hoping for any opinions out there
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
Below is a reply in some other forum by Samsung offcials regarding a specific method to Hard-Reboot your phone after a Firmware update: This method particularly helped me improve the battery life on SGS2 after 4.1.2 update.
"1. I’m sorry you are having issues with your device after upgrading the firmware. I can understand your frustration about this.
Old systems settings can be left on the phone after an update occurs, which is why we usually recommend a full factory reset after updating. If this isn’t done your device may begin to give false readings from system resources, or experience technical problems, which may explain the issue you are having.
We would advise on doing the following, which is designed to reset the settings on your device. Please back up your device using Samsung KIES before you do this.
1) Remove the battery for at least 40 minutes, put the battery back in and allow it to fully discharge. Afterwards, perform a full battery charge with the device turned off. Do not interrupt the charging process.
2) After the battery is fully charged, we would like you to perform a full factory reset, which can be done via Settings > Backup > Reset.
This process will reset your device, remove old system files that are no longer needed and enable your device to operate normally again.
Please let us know if your device continues to experience problems after the reset so we can investigate further.
If you require any further assistance, please contact Samsung again and we will be more than happy to help.
Kind regards,
Stewart
Online Support Team
SAMSUNG Customer Support Centre

infinitylook said:
Does Jb stock for you has better life or does custom rom have more? I really like the custom roms but as per observation stock rom offers more battery time. Right now I just reverted to stock rom i9100xwlss. Touchwiz really sucks. Supernexus is really beautiful but offers less battery (but I will have to try yet their latest build). Also one of the reasons for going back to stock is the camera shot quality. Custom roms really have poor camera quality. I guess when it comes to lowlight shots the stock roms are best. So much for that. Does stock rom offer more battry for you or custom rom does?
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
Actually I only use stock JB.. and trying to get it last longer with some custom kernels.. recently trying snapdragon rom, which is stock JB as well but with some S4 apk made compatible with S2... tried some time back omega, vanila rootbox and some other android builds for s2.. but was facing few stability issues / bugs and also missed some features that i was getting from stock rom.. so i gave up with these... now just aiming at stability and if possible battery endurance.. but not at the cost of stability.