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Battery Life on Infuse: Gingerbread vs Ice Cream Sandwich

Hi, so I recently got an Infuse from someone that is still on Froyo and I figure I might as well upgrade to a custom rom.
Since I care about battery life the most, I figure I would ask which version of Android provides the best battery life for the Samsung Infuse: Gingerbread or Ice Cream Sandwich.
I probably won't be running apps that fetch/push for data a whole lot, which obviously helps the battery life. But I thought I'd ask to get someone's opinion on this specific phone and a comparison between Gingerbread vs ICS before picking a rom.

And the winner is... Gingerbread!
Sent from my sweet & buttery Infuse

abc617 said:
Hi, so I recently got an Infuse from someone that is still on Froyo and I figure I might as well upgrade to a custom rom.
Since I care about battery life the most, I figure I would ask which version of Android provides the best battery life for the Samsung Infuse: Gingerbread or Ice Cream Sandwich.
I probably won't be running apps that fetch/push for data a whole lot, which obviously helps the battery life. But I thought I'd ask to get someone's opinion on this specific phone and a comparison between Gingerbread vs ICS before picking a rom.
Click to expand...
Click to collapse
Gingerbread is a better battery saver. Although i get decent battery on ics and jellybean. I know i perfer all that ics/jb has to offer in features over having battery life. But for what your asking id suggest AEON or the stock gb. Aeon is very stable and has some cool extras without much battery drain
Sent from my SGH-I997 using xda app-developers app

andros11 said:
And the winner is... Gingerbread!
Click to expand...
Click to collapse
Really? I got faaar better battery life on Scott's Paranoid Android ICS build than I EVER did for any Gingerbread rom...

Honestly, I don't even remember by now
I have never payed that much attention to battery life..
usually lasts all day for me on JB, that's all I need
Sent from my sweet & buttery Infuse

the more recent ics and jelly bean kernels get great battery life due to fixed bt and wifi drivers (the wifi driver and binary were taken from another device from what i understand) and more stable cpu clock code than it had initially. not too much more than stock but i have to say it is better for me. but i guess it all depends on usage. one may have better standby vs awake battery life or something. the available kernels have been this way for atleast a month. when we start to see more kernels with undervolt it should get better yet.

I'm using CM10 8/23 and my battery life is good.
One of the best I even made a snapshot (can't upload right now): 51% left after 12 hours 46 minutes.

That's why I'm in a dilemma between jelly bean and gingerbread. I do appreciate JB a lot, way better functions. But still the battery life and compatibility are big issues. I can get 2 days under gb but only less than 12 hours in JB, that's a big issue.

I have been getting great battery life with the latest JB ROMs I have been using. Pretty much on par with the GB ROMs I used.
Sent from my SGH-I997 using xda app-developers app

Can't say i've had good luck with battery life, I used to average 3 hours of screen on time in Gingerbread, but since moving to ics/jb that has dropped to anywhere from 30 mins (if i leave the phone and standby drain eats it) to 1 hour 45 mins on a single charge...not good.
No rogue apps, no media scanner (i constantly check these things with betterbatterystats, i don't install anything i didn't install on gingerbread). Just the cell phone standby drain eating my battery alive (BBS reports it as GTALK_ASYNC and RILJ wakelocks).
I've been researching it for months now and get various answers (the wakelocks are caused by bad APN settings for example), tried all the fixes, still no luck. I suspect that it's probably a Rogers thing but who knows.

threi_ said:
Can't say i've had good luck with battery life, I used to average 3 hours of screen on time in Gingerbread, but since moving to ics/jb that has dropped to anywhere from 30 mins (if i leave the phone and standby drain eats it) to 1 hour 45 mins on a single charge...not good.
No rogue apps, no media scanner (i constantly check these things with betterbatterystats, i don't install anything i didn't install on gingerbread). Just the cell phone standby drain eating my battery alive (BBS reports it as GTALK_ASYNC and RILJ wakelocks).
I've been researching it for months now and get various answers (the wakelocks are caused by bad APN settings for example), tried all the fixes, still no luck. I suspect that it's probably a Rogers thing but who knows.
Click to expand...
Click to collapse
did you try cm9?

qkster said:
did you try cm9?
Click to expand...
Click to collapse
Yup, it's all been the same since ICS, I absolutely cannot get acceptable battery life, no matter what i do.

threi_ said:
Yup, it's all been the same since ICS, I absolutely cannot get acceptable battery life, no matter what i do.
Click to expand...
Click to collapse
are you getting AOS drain while on wifi?
you may consider a factory reset and sdcard format
when you reinstall, decline all google locations and backup services.

qkster said:
are you getting AOS drain while on wifi?
you may consider a factory reset and sdcard format
when you reinstall, decline all google locations and backup services.
Click to expand...
Click to collapse
I have done a factory reset, i formatted my sd card not too long ago (I also suspected this)
I also make sure google locations is disabled, never keep backup enabled (i did once by mistake and the auto restore nearly killed all my monthly data)
I am going to toggle wifi tonight and set a marker in BBS, i'll check the drain overnight (I did this a while ago and it did improve standby drain somewhat, but I am going to try it again)

threi_ said:
Can't say i've had good luck with battery life, I used to average 3 hours of screen on time in Gingerbread, but since moving to ics/jb that has dropped to anywhere from 30 mins (if i leave the phone and standby drain eats it) to 1 hour 45 mins on a single charge...not good.
No rogue apps, no media scanner (i constantly check these things with betterbatterystats, i don't install anything i didn't install on gingerbread). Just the cell phone standby drain eating my battery alive (BBS reports it as GTALK_ASYNC and RILJ wakelocks).
I've been researching it for months now and get various answers (the wakelocks are caused by bad APN settings for example), tried all the fixes, still no luck. I suspect that it's probably a Rogers thing but who knows.
Click to expand...
Click to collapse
i do notice battery drain in some areas. but not others. some people seem to think certain modems are effecting the cell standby drain, not sure myself. but there are many compatible modem.bins to try from att and t-mobile(t959v)

Just an update: wifi didn't help much.

threi_ said:
Just an update: wifi didn't help much.
Click to expand...
Click to collapse
I've been playing around a bit with different gb kernels, odex and deodex.
I found the drain issue much less on stock uclb3 kernel and rfs file system.
Almost all drain were associated with being on wifi...wakelocks and something else kills the battery.
If I have wifi off, there is usually not any issue.
You may have to play around a bit to see. My experience on cm9 and cm10 has been limited. I have noted several users noticing drain on cm9 and cm10 as well.
To avoid drain:
1. Use it to the max and constantly.
2. Leave the phone on airplane mode when not in use.
3. Turn off data (wifi and mobile data) and background data when not in use. I use this last mode.

Thanks for the tips man :good:
Airplane mode of course makes batt life better (disabling data doesn't), but when I start having to make sacrifices I didn't have to on GB it becomes a problem for me. Why should I jump through hoops and gimp my convenience for battery life that still isn't even as good as GB?
Instead of that i'd rather try to find the root cause of the problem. Doing so then allows us to help others that may have the same problem.
It definitely is an issue with the radio (or rather CM code overlooking something concerning the radio). What exactly, i'm not too sure. I've tried different modems as well, UCLB3 on JB was awful for battery life, UCKL2 and UXKG3 are slightly better but still not that great.
I don't want to complain about these things, I always try to research first, but damn....i'm stumped.

threi_ said:
Thanks for the tips man :good:
Instead of that i'd rather try to find the root cause of the problem. Doing so then allows us to help others that may have the same problem.
I don't want to complain about these things, I always try to research first, but damn....i'm stumped.
Click to expand...
Click to collapse
Yeah, I agree with you there. The techniques I use is pretty simple. Pose the hypothesis. Start with a full deck and slowly eliminate or start minimal and add.
ex: flash jb without gapps; without microSd. try different modem; try a different kernel. different kernel from different build.
have to use it for a few days to find out.
do the same for cm9.
add gapps...
add microsd
etc..
at some point, you will find out contributing factors.
There are a few battery thread that may be helpful if you havent looked:
http://forum.xda-developers.com/showthread.php?t=1408433&page=9

Ryo Misaki said:
Really? I got faaar better battery life on Scott's Paranoid Android ICS build than I EVER did for any Gingerbread rom...
Click to expand...
Click to collapse
This is true, and you can save battery life w/ customization and now Scott is up to JB being one of the best battery life roms I've run
or just turn down your screen brightness

Need dev help trying to boost MIUI/HebMIUI battery life

Hi guys and gals (if exist)
I really love my HebMIUI ROM based on Erikmm's latest MIUI V4.
I injected it the latest Team Acid kernel and auto brightness mod and it seem to work flawlessly,
Problem is battery life is just not good enough to serve as a daily driver.
I intend to merge PIMP my ROM mod and DS's A.I when I have time, but I seem to miss something.
I'd be happy to get suggestions.
Here are some XDA version Better Battery Stats raw data snaps : (10x!)

Idk but actually, when I told u my battery was not good and I meant it just could last for a day lol...and I have never used it for more than a day w/o a charge even on GB so i dont think its bad...anw, just try all things u think its good cause its hard to say anything bout tweaks and battery life I think cause...IMO and from what I have been through, scripts and build.prop lines not really help much both performance or battery life...and even OC or UV
Sent from my SGH-T959V using xda premium

daothanhduy1996 said:
Idk but actually, when I told u my battery was not good and I meant it just could last for a day lol...and I have never used it for more than a day w/o a charge even on GB so i dont think its bad...anw, just try all things u think its good cause its hard to say anything bout tweaks and battery life I think cause...IMO and from what I have been through, scripts and build.prop lines not really help much both performance or battery life...and even OC or UV
Sent from my SGH-T959V using xda premium
Click to expand...
Click to collapse
I use cMiui 2.8.10.
so I don't know about HebMIUI but i use that rom around 20hr w/o charging.
This rom base on Hefe kernel 0.8(I think)
I tested Hefe 0.8.1 kernel but 0.8 is better than 0.8.1 battery life.
I use cMiui 2.8.10. I think cMiui and Miui is almost same.
I love this rom. I waiting UPDATE. ^^
You can try this and flash rom again.
http://forum.xda-developers.com/showthread.php?t=1500427

Hi Dao
I know what you mean..
we both are more than heavy users, not leaving the phone for a minute, so in that way, yes, even on Valhalla I barely made it through the day.
Here I get this issue even if I have no activity and that's what bugs me. Batt is draining no matter what the user does. That's why I shared this technical data presented in the pics.
Thanks MJMJ
I'm not looking for a replacement.
I love the original MIUI, tune and customize it and share it, here on xda, especially for Hebrew speakers, but not only.
Every ROM has his pros and cons. Cmiui is based on cm9 and miui is based on touchwiz. I prefer Miui as it is the original ROM and is generally considered more stable.
I might try Hefe kernel though.
I think problem is related to device awake status...
sent from me

That your phone is running quite a bit at 100 MHz when I might expect that it be in deep sleep caught my eye. I suspect something is keeping your phone from deep sleep. I can't tell from the BBS you have posted as I'm not sure what you were doing during the time it was collecting stats. I find the BBS from when I'm not touching my phone and it is running on battery overnight perhaps the most valuable.
As far as Hefe 0.8.0 vs. 0.8.1 on battery life, you've completely fooled yourself if you believe you are finding a difference. Go ahead and pull a source diff -- it all is about the interface to sysfs so that external apps can control the UV/OC, not the kernel operation.

jeffsf said:
That your phone is running quite a bit at 100 MHz when I might expect that it be in deep sleep caught my eye. I suspect something is keeping your phone from deep sleep. I can't tell from the BBS you have posted as I'm not sure what you were doing during the time it was collecting stats. I find the BBS from when I'm not touching my phone and it is running on battery overnight perhaps the most valuable.
As far as Hefe 0.8.0 vs. 0.8.1 on battery life, you've completely fooled yourself if you believe you are finding a difference. Go ahead and pull a source diff -- it all is about the interface to sysfs so that external apps can control the UV/OC, not the kernel operation.
Click to expand...
Click to collapse
I an not a professional. I'm just user of this forum.
I found this about battery life.
about WIFI I advanced setup Keep Wi-Fi during sleep -> Only when pluggged in.
use both of this hefe 0.8 and 0.8.1.
0.8 is wifi off when phone lock.
but 0.8.1 is not.
and battery life is different.
I write just my experience on my larrow professional konwledge.
I'm sorry I can not understand about source code,Interface and UV/OC.
Just experience.
Anyway I love cMiui and Hefe kernel.

Hi
I put WiFi as always on (even on sleep) because I wanted to get whatsapp and work mail in real time. Otherwise I didn't get them in time. Perhaps this is it. I will try it as on only when connected and report.
I would also try it with and without auto brightness mod. Let me know what data do you need.
sent from me

What follows is my opinion and it is not completely backed up by experimental evidence, so take it as you will.
I don't believe that any ROM or kernel can significantly improve battery life over any other "good" ROM or kernel. I do believe that there are ROMs and kernels out there than can significantly reduce battery life though.
In my opinion, the two biggest factors on battery life (past battery againg) are
How you use your phone
The applications you or the ROM have running
The most insight I have gained on battery life is running BetterBatteryStats on a "full" battery (unplugged) overnight, when I'm not interacting with the phone at all. As soon as you wake up, turn on the phone, go to BBS, and save a full log.
With a good ROM/kernel, I think you should be getting 90-95% "deep sleep" and no more than ~2% per hour (on a typical 1800-2300 mAh "advertised" capacity battery in good condition) drain. If you're not getting that, I'd look carefully at what is keeping your phone awake. If you have questions about interpreting the results, I know the BBS author and has a great thread where you can post your logs and get some feedback.
When the phone is running, it is my opinion that the screen consumes most of the current, assuming you're not a "gamer" or streaming music or other content. Running with dark themes in your apps (as you can), as well as keeping the brightness reasonably low (auto-brightness should help most users here), are good steps to take.
The GP2A light sensor reports 0.75 mA current consumption in Android, so I have a hard time believing that turning on auto-brightness is any worse that running at similar manual brightness levels. If the phone were to be able to run for 18 hours with the screen on (which we know it can't), it would be averaging ~100 mA -- the GP2A would account for less than 1% of that. Of course, that 0.75 mA may not be the correct number. I'm hoping to see if I can do some measurements on the screen drain at various brightness levels, as well as confirm that the GP2A draws minimal current itself. (Unfortunately, the I2C version of the light sensor used in the SGS4G and other phones does not seem to have a publicly available datasheet.)
I think that the way someone uses the phone has a significant impact, even day-over-day. I know that Hefe Kernel v0.8.0 and v0.8.1 have no meaningful differences in how power is managed. The report that one is noticeably different than the other says to me that day-to-day differences in how a phone is used, even when the owner thinks they are using it the same way, are perhaps more than may exepct.

Werd to your grandma!
Good post Jeff!

Good post Jeff.
Sometimes something as simple as playing a game and then switching to something else without the game exiting properly can do it. Once or twice a day on my PC, I'll go to my task manager and notice that IE or Chrome is still running despite my windows being closed. It's stuck in limbo. On a PC, it may suck up a bit of RAM or CPU cycles but if you have 6cores/8gb like me, you don't notice. Something like that on a phone can suck up battery life like a hog though.
Installing 1 badly coded app from the market can do it. Viewing webpages with more of a white background can affect battery life. There is a million things. It's like laptops. They may advertise 6hours battery life. Sure on the dimmest settings with the screen turned down and very few apps running. Stream and HD movie from Netflix and watch how that 6 hours turns into 2. lol.

Thnak you very much good informantion about battery life.
I understand what you say.
About my post.(I use cMiui and Hefe kernel 0.8)
WIFI I advanced setup Keep Wi-Fi during sleep -> Only when pluggged in.
I tested both of this hefe 0.8 and 0.8.1.
0.80 is wifi off when phone lock.
but 0.8.1 is not.
kernel version : 2.6.35.7-Hefe-ics-00044-g151987a and
2.6.35.7-Hefe-ics-00046-g83ec25b
Do I something worng?
I am not complain about your KERNEL or ROM.
I'm very glad you guys about good efect,time and everything for make good ROM and KERNEL.
Thanks again.

I don't think you did anything "wrong" at all!
The control of the WiFi is mainly a ROM thing. Android says "turn off the WiFi" and the kernel does it. I'm puzzled as to why you are seeing a difference. Since v0.8.0 and v0.8.1 are the same as far a WiFi goes, I suspect something else. Perhaps settings not "sticking" between flashes? If it happens again, logcat and dmesg might provide a clue as to why. If you do would you post in either the Hefe Kernel Q&A thread or the Q&A thread for your ROM?

Hi Jeff
Thanks for the detailed posts.
Did what you asked : got 96% after 7 hours of no use, no charge. Deep sleep is 98%.
So I come to conclusion that wifi is sucking up the battery on miui. It has very good reception and always shows full bars for all spots.
sent from me

itzik2sh said:
Hi Jeff
Thanks for the detailed posts.
Did what you asked : got 96% after 7 hours of no use, no charge. Deep sleep is 98%.
So I come to conclusion that wifi is sucking up the battery on miui. It has very good reception and always shows full bars for all spots.
sent from me
Click to expand...
Click to collapse
This is a mod that Erik put into his miui rom to attempt to fix the wifi "issue" on ics, the wifi signal is very strong (or maybe its just the wifi icon)
Sent from my SGH-T959V using xda app-developers app

Hi
I installed 'Better WiFi' (from the creators of BBS) and set it to open wifi connection only when screen is on and keep it if there is network activity.
Left it at night and dropped from 65% to 35%.
I'm now sure WiFi is over draining when opened.
sent from me

I haven't heard of that app before. My search-fu is failing me though, both here and in the Market. Where did you find it?
Edit: Found it http://forum.xda-developers.com/showthread.php?t=1801284
Posted from my SGS4G, thanks to Team Acid development

http://forum.xda-developers.com/showthread.php?t=1801284

Anyone got any battery tweaks?

CM10 battery life is pretty poor, anyone found a solution? I remember on defy someone improved by using stock battd folder in place of the original one, however desire s doesn't have this folder. Undervolted, full charge cycle, disabled auto brightness light to moderate use and only 8 hours. Display is main culprit according to system, maybe its getting too much voltage or something? I'm no dev its just a thought
Sent from my rooted baby monitor

Perhaps you should calibrate your battery with an app like battery calibration
"It's suggested, but not necessary, to let the phone fully discharge after calibration, then charged to 100% without break."
Make it twice or three time then you should see a difference.

benJX said:
Perhaps you should calibrate your battery with an app like battery calibration
"It's suggested, but not necessary, to let the phone fully discharge after calibration, then charged to 100% without break."
Make it twice or three time then you should see a difference.
Click to expand...
Click to collapse
Battery stats is a myth: http://www.xda-developers.com/andro...-battery-stats-does-not-improve-battery-life/
The difference seen is purely down to the full charge cycles done in this method, after about 5 days the battery stabilized anyway, thanks anyway
Sent from my rooted baby monitor

@non4 said:
CM10 battery life is pretty poor, anyone found a solution? I remember on defy someone improved by using stock battd folder in place of the original one, however desire s doesn't have this folder. Undervolted, full charge cycle, disabled auto brightness light to moderate use and only 8 hours. Display is main culprit according to system, maybe its getting too much voltage or something? I'm no dev its just a thought
Sent from my rooted baby monitor
Click to expand...
Click to collapse
I have the same issue on Pacman (CM 10).
My - I hope temporary - solution is to disable 3G as much as I can. For everyday usage, 2G (Edge) is sufficient for me. At home I am on wifi anyway, so I perform the heavy tasks then.
I noticed a very big difference when using 2G only vs. mode "3G preferred". It seems that there is a 3G battery draining issue with CM.

3g is known to drain battery. Keep it at 2g for better battery life.
FromTheDesiredS

rain987 said:
3g is known to drain battery. Keep it at 2g for better battery life.
FromTheDesiredS
Click to expand...
Click to collapse
I know this trick from the defy forums, cm10 had the same issue on that phone, I'm getting the best battery life with cm10.1 build 12 with andromod kernel, using ondemandx governer gives normal -ish life even with 3g enabled
Sent from my rooted baby monitor

HUGE battery drain with Viper ROM

Hey,
I just switched to the new Viper ROM for the DHD.
It works rockstable and very smooth, but the drain is immense.
The telephone app uses 49% power. How is that possible?
Any ideas on how to fix this bug?
Greetings from cologne.
PS: sry for posting this here. I'm still not unlocked for the developers forums
Sent from my HTC Desire HD using xda app-developers app

I did change my rom to viper 2 weeks ago and change also to lupus v5 kernel, and i have less battery drain than before, also maybe it s a question of Kernel...

lolmachine said:
Hey,
I just switched to the new Viper ROM for the DHD.
It works rockstable and very smooth, but the drain is immense.
The telephone app uses 49% power. How is that possible?
Click to expand...
Click to collapse
Hi there!
Well, I have been using Viper V4 ROM for a while now and on stock Kernel [Viper V4.5 available here if you want http://forum.xda-developers.com/showthread.php?t=2128642] and in the first couple days or so I did notice a massive drain in battery life however this drain did become much better when the ROM "settled".
The second point is that I don't permanently leave my 3G, network data, wifi, etc, always on but only on a "use as you need" basis. This does not only extend your battery time duration obviously but also your eventual battery life. You might want to think long term and start to opt this way also.
Thirdly Viper ROM comes with various tweaks and one of them is for battery economy [you can find that under \menu\settings\power saver] where you can actually program 3 different modes with different times and specs at your own wish.
Fourthly I know of a great personal tweak that really works on Android phones but I really did not have to do it on Viper because as mentioned before the battery life for me is good enough [one charge=over 48 hours!] but I'll teach you nevertheless:
When your battery gets to 3% use the app Root Explorer and go to: \data\system\batterystats.bin and delete this file [batterystats.bin]. Go ahead...no fear...it won't damage your phone!
Then turn on your 3G, network data/traffic, wifi, screenlight to maximum [you must be quick before your phone turns off!!!!!]
Then put the charger in your phone and reboot with it plugged in charging and phone ON...confirm that your 3G, network data, etc is still on.
Leave all of them on until finish 100% charge...remember that will take more time to charge...after charge turn 3G, network data, wifi OFF and use as you need basis or as you would normally use but avoid always leaving them on 24 hours.
When your battery reaches 3% or even 5% this time, do the above again but DON'T EVER DELETE BATTERYSTATS.BIN AGAIN!!!!!
Do the whole process 4 or 5 times and you will notice INCREDIBLE change in battery life from there on. After these 4/5 times you can stop doing the process.
NEVER! Charge your phone at any point in the battery indicator above than 5%
I hope this helps you...please let me know.
Oh and don't forget to click on THANKS.

Thanks alot for your answers!
I've tried to calibrate the battery with your described method, but that doesn't change the high power consumption by the telephon app...
Switching the Kernel looks like a good idea to try. I will do that tomorrow and post my results here
greetings!

Hi there mate!
Yeah sure, that would be my choice also but I'm still stuck with stock kernel due to locked bootloader from SIM block...until then...
See ya later mate.
Sent from my WT19i using xda premium

[Q] Samsung Galaxy S2 GT I9100 heating up

Ello Folks,
I'm new to this forum and for some stupid reason I can't post within the forum I wanted to, so I hope someone can help me here..
I have been playing with Custom Roms for a long time and I have ALWAYS encountered problems regarding battery drain. I have searched innumerous times for ways to fix it.. I've tried many different ROMS and KERNELS and I always ended up with a massive battery consumption with little use. I then thought it was my battery as the device is quite old so I decided to buy a new original battery and still having the same problem.
I am starting to think that I am really dumb and doing something wrong or maybe I am just unlucky. I got my phone back in 2011 from T-Mobile UK and I am now running JB 4.2.2 Revolt JB I9100 and Dorimanx V9.33 as kernel.
My battery is going from 100% to 0% in like 4 hours. Any help would be very much appreciated.
Thanks

leoarten said:
Ello Folks,
I'm new to this forum and for some stupid reason I can't post within the forum I wanted to, so I hope someone can help me here..
I have been playing with Custom Roms for a long time and I have ALWAYS encountered problems regarding battery drain. I have searched innumerous times for ways to fix it.. I've tried many different ROMS and KERNELS and I always ended up with a massive battery consumption with little use. I then thought it was my battery as the device is quite old so I decided to buy a new original battery and still having the same problem.
I am starting to think that I am really dumb and doing something wrong or maybe I am just unlucky. I got my phone back in 2011 from T-Mobile UK and I am now running JB 4.2.2 Revolt JB I9100 and Dorimanx V9.33 as kernel.
My battery is going from 100% to 0% in like 4 hours. Any help would be very much appreciated.
Thanks
Click to expand...
Click to collapse
Batter drain in 4 hours is not normal. But with heavy usage of 3g/4g it can be. As you said you got heating problems too.
So, first with the battery. Install betterbatterystats from play store. Let the battery drain off completely and charge it to 100 in a go keeping data network/Bluetooth/GPS/WiFi in off mode. Check how much time it's taking to charge it from 0% to 100%. Now discharge it off to 0% and Check the rate of discharge. If it's below 5%/Hour you are safe.
But if it is as you said before 4hours battery backup, there must be some trouble.
These kinds of drastic battery drain happens of many reasons.
1. Poor signal strength.
2. Overloading cpu ( which also cause overheating)
3. Any background running apps which utilizing a bunch a data.
4. Bad kernel (we can pick this out as you tried different kernels.)
5. Defective battery.
Or a last chance
6. A hardware failure.
So inorder to find the root cause behind this problem check each of the possibilities one at a time.
In case of cpu, change the governor and I/o scheduler and see.
In case of background running apps, check whichever programs revising maximum amount of battery.
Hope it helps..

jabrif said:
Batter drain in 4 hours is not normal. But with heavy usage of 3g/4g it can be. As you said you got heating problems too.
So, first with the battery. Install betterbatterystats from play store. Let the battery drain off completely and charge it to 100 in a go keeping data network/Bluetooth/GPS/WiFi in off mode. Check how much time it's taking to charge it from 0% to 100%. Now discharge it off to 0% and Check the rate of discharge. If it's below 5%/Hour you are safe.
But if it is as you said before 4hours battery backup, there must be some trouble.
These kinds of drastic battery drain happens of many reasons.
1. Poor signal strength.
2. Overloading cpu ( which also cause overheating)
3. Any background running apps which utilizing a bunch a data.
4. Bad kernel (we can pick this out as you tried different kernels.)
5. Defective battery.
Or a last chance
6. A hardware failure.
So inorder to find the root cause behind this problem check each of the possibilities one at a time.
In case of cup, change the governor and I/o scheduler and see.
In case of background running apps, check whichever programs revising maximum amount of battery.
Hope it helps..
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Cheers mate,
I am well aware that custom kernels allow me to overclock it and change governors and i/o and that these kinda settings have a major role on how much battery the device will consume. But as I have never really understood the diferences btw them I for once have never played with the values so I have always left 'em at their default value.
The only real reason I've decided to change to a Custom Rom is to get new versions of the Android OS and to get rid of the hideous TouchWiz skin from Samsung..
I am not living in the UK at the moment as got transfered to Brazil for work and I have been on TIM network and they suck badly so maybe cuz their 3G sucks its whats causing my battery to drain like crazy.
But I will definitely follow your instructions and hopefully I'll get a positive result..
Once again, thank you very much.