[Q] Battery or ROM fault? - Galaxy S II Q&A, Help & Troubleshooting

Hi,
I have a rooted Galaxy S2 with CM11, Aug 8, 2014 build, with the original kernel (3.0.64-CM-g89e6992). For a while, I had excellent battery life, everything worked fine. But recently my phone would shut down before reaching 0%, at around 5-7-9. And when I turn it back on with the charger plugged in, it starts on a higher percentage. Before shutting down the screen flickers, and then suddenly it either freezes completely and I have to remove the battery or just shuts down. If I use the phone while charging, it would take ages to gain 1%*, and I have heavy battery drain.
My question is, is it because of the battery getting old or it is a ROM failure? Apart from denying certain options that seemed to drain battery in Privacy Guard I did not change anything that would require to get deeper into the system. Wifi is usually on, but location, sync or anything that could have heavy battery use is off.
Thank you for your answers!
*I'm not entirely sure, but I think the same happens if I charge it in flight mode.

gravisone said:
Hi,
I have a rooted Galaxy S2 with CM11, Aug 8, 2014 build, with the original kernel (3.0.64-CM-g89e6992). For a while, I had excellent battery life, everything worked fine. But recently my phone would shut down before reaching 0%, at around 5-7-9. And when I turn it back on with the charger plugged in, it starts on a higher percentage. Before shutting down the screen flickers, and then suddenly it either freezes completely and I have to remove the battery or just shuts down. If I use the phone while charging, it would take ages to gain 1%*, and I have heavy battery drain.
My question is, is it because of the battery getting old or it is a ROM failure? Apart from denying certain options that seemed to drain battery in Privacy Guard I did not change anything that would require to get deeper into the system. Wifi is usually on, but location, sync or anything that could have heavy battery use is off.
Thank you for your answers!
*I'm not entirely sure, but I think the same happens if I charge it in flight mode.
Click to expand...
Click to collapse
Firstly, that is a really old build. There have been important fixes since then such as FPBug fix, and play services wakelock fixes which would be worth it on their own to flash a recent nightly(that is if you want to stay on cm11). I would have a guess and say the battery drain is probably a wakelock issue; using better battery stats or similar would tell you more. I wouldn't rule out the battery coming to the end of it's life either or even a usb port that needs looking at.
First thing I would do is transfer any data you want to keep to an sd card or computer and do a full wipe and flash a newer rom that is still being developed, such as cm11 nightlies or a sabermod version by @Markox89. If the issues persist, I would then look at replacing the battery, and then check the usb port. It may help to install the stock rom and re-root from there too.

noppy22 said:
Firstly, that is a really old build. There have been important fixes since then such as FPBug fix, and play services wakelock fixes which would be worth it on their own to flash a recent nightly(that is if you want to stay on cm11). I would have a guess and say the battery drain is probably a wakelock issue; using better battery stats or similar would tell you more. I wouldn't rule out the battery coming to the end of it's life either or even a usb port that needs looking at.
First thing I would do is transfer any data you want to keep to an sd card or computer and do a full wipe and flash a newer rom that is still being developed, such as cm11 nightlies or a sabermod version by @Markox89. If the issues persist, I would then look at replacing the battery, and then check the usb port. It may help to install the stock rom and re-root from there too.
Click to expand...
Click to collapse
Wow, thank you!! Which one would you prefer, cm11 nightly or a sabermod version? Also, are nightlies stable enough for everyday use? And what else should I consider ("that is if you want to stay on cm11")? Sorry for all the questions, I'm fairly new to the rooting scene..

gravisone said:
Wow, thank you!! Which one would you prefer, cm11 nightly or a sabermod version? Also, are nightlies stable enough for everyday use? And what else should I consider ("that is if you want to stay on cm11")? Sorry for all the questions, I'm fairly new to the rooting scene..
Click to expand...
Click to collapse
Forget the "nightly" tag, the days of nightlies being unstable are gone(for the most part). The main difference between the cm11 nightlies and @Markox89 's builds is Markox uses sabermod toolchain to compile which makes the rom run a little bit smoother and a little bit more battery efficient. Otherwise they are the same. Read the last month or so of posts for more info HERE
Other roms to consider - it depends on what you want, stability vs newer lollipop builds; basic streamlined rom vs heaps of features.... I like small, fast roms vs the bells and whistles and I would have no hesitation recommending slimsaber kitkat by @fusionjack, but it's up to your own preferences -
For Slimsaber 4.4.4
For S2 Development thread for most of the roms being developed right now

noppy22 said:
Forget the "nightly" tag, the days of nightlies being unstable are gone(for the most part). The main difference between the cm11 nightlies and @Markox89 's builds is Markox uses sabermod toolchain to compile which makes the rom run a little bit smoother and a little bit more battery efficient. Otherwise they are the same. Read the last month or so of posts for more info HERE
Other roms to consider - it depends on what you want, stability vs newer lollipop builds; basic streamlined rom vs heaps of features.... I like small, fast roms vs the bells and whistles and I would have no hesitation recommending slimsaber kitkat by @fusionjack, but it's up to your own preferences -
For Slimsaber 4.4.4
For S2 Development thread for most of the roms being developed right now
Click to expand...
Click to collapse
I'll try Markox89's ROM. Thank you for everything!

Related

[Q] battery gone from 72% to 5% in 30sec -lagging-

Hey everyone
I got little problem here
So here is the situation it had happen 3 times this weak to me
When am using my phone (RR3 or facebook...) it freeze or lagged sometime,
That is natural to happen sometime
But in those 10 days when it lag it freeze for 30 sec/ 1 min
Then it restarts, but when it’s restarted the battery is gone, from 72% to 5% in, how is that possible ???? (pic 1)
And if I don’t put it in charge immediately it will just turn off after minutes!
_Still when I put it in charge and after like 20 min in charge I noticed that had already reached 80% just like if it had not started charging from 5% but from 60% !!! (pic 2)
_And sometime without any freeze or lag, it just turn off after showing that the battery is low 20%
So what is that?? A system / Hardware / or battery life problem??
I have this phone GS2 from 3 year now, and I’m using it like a geek
You could have a bad battery. When it drops to 5%, pull the battery before it fully boots. Wait 10 seconds, and put it back in, and then turn back on. Should help with the battery level indicator
Sent from my HTC One X using xda premium
magnetboard said:
You could have a bad battery. When it drops to 5%, pull the battery before it fully boots. Wait 10 seconds, and put it back in, and then turn back on. Should help with the battery level indicator
Sent from my HTC One X using xda premium
Click to expand...
Click to collapse
:fingers-crossed: yes look like great idea, i will try it :good:
meanwhile have anyone an other ideas
simoco said:
hey everyone
i got little problem here
so here is the situation it had happen 3 times this weak to me
when am using my phone (rr3 or facebook...) it freeze or lagged sometime,
that is natural to happen sometime
but in those 10 days when it lag it freeze for 30 sec/ 1 min
then it restarts, but when it’s restarted the battery is gone, from 72% to 5% in, how is that possible ???? (pic 1)
and if i don’t put it in charge immediately it will just turn off after minutes!
_still when i put it in charge and after like 20 min in charge i noticed that had already reached 80% just like if it had not started charging from 5% but from 60% !!! (pic 2)
_and sometime without any freeze or lag, it just turn off after showing that the battery is low 20%
so what is that?? A system / hardware / or battery life problem??
I have this phone gs2 from 3 year now, and i’m using it like a geek
Click to expand...
Click to collapse
try flashing the stock rom may be something is draining your battery bcoz you said its also lagging
bhavstech said:
try flashing the stock rom may be something is draining your battery bcoz you said its also lagging
Click to expand...
Click to collapse
when i said its lagging, i didn't' mean that it lag all time, it lag just in google chrome or RR3 in like 1 from 5
and lagging it doesn't the problem here (cause its normal to lag in some app by all the UPdate and other stuff )
my problem is way when it restart the battery is crushed to the floor
and thanks everyone for the help :laugh: i really appreciate :good:
Simoco said:
when i said its lagging, i didn't' mean that it lag all time, it lag just in google chrome or RR3 in like 1 from 5
and lagging it doesn't the problem here (cause its normal to lag in some app by all the UPdate and other stuff )
my problem is way when it restart the battery is crushed to the floor
and thanks everyone for the help :laugh: i really appreciate :good:
Click to expand...
Click to collapse
if battery is crushed then it may be a software issue same soln flash stock and check
Reset fuel gauche chip in stweaks. (only if you have siyah, gustavo or dorimanx kernel, or any other kernel that supports stweaks)
what battery are you using the original 1650, the 2000 extended?
---------- Post added at 12:44 AM ---------- Previous post was at 12:38 AM ----------
consider also it raised the temp by 10 °C in those 3 secs ^_^' it seems you have an app who drains like a boss
bhavstech said:
if battery is crushed then it may be a software issue same soln flash stock and check
Click to expand...
Click to collapse
Yes that's what I was just thinking about, considering that the life of the battery is normal if everything works fine. Well now I'm thinking that all what i need is to update from 4.0.2 to 4.2.2
So is there anyone like a best version of Android
Simoco said:
Yes that's what I was just thinking about, considering that the life of the battery is normal if everything works fine. Well now I'm thinking that all what i need is to update from 4.0.2 to 4.2.2
So is there anyone like a best version of Android
Click to expand...
Click to collapse
Buddy, you haven't seen the real part of Android yet. Considering your battery issue, remove the battery and simply touch it in the middle. If the battery is swollen or bloated, then you need a new battery (3 years of usage make your battery weaker and subject to faster draining due to deformation of the cells inside the battery). In no doubt, Samsung's Touchwiz is THE main cause of lagging and drain, so here are my suggestions on ROMs that can fix your problem:
1- For 2.3 GB ROMs, go for CyanogenMod 7.2.0 with siyah kernel 2.6 (google the kernel name to find it or ask me for a link just in case)
2- For 4.0 ICS ROMs, go for CyanogenMod 9 stable on get.cm and go for Siyah 5.0.1 stable for more hardware customizing.
3- For 4.1 JB ROMs. well, you can grab CyanogenMod 10 or SlimBean 4.1 old release for the I9100 but I recommend skipping this version of Android (it's too boring)
4- For 4.2 JB ROMs, try Cyanogenmod 10.1.3 stable. if you love Touchwiz and want a stock experience, try Revolution Rom UX build 2 which is too close to an official 4.2 stock update. When it comes to me, SuperNexus 2.0 is the best 4.2.2 ROM I ever used. Flash Dorimanx 9.43 stable to get more out of your device just in case buddy.
5- For 4.3 JB ROMs, go for CyanogenMod 10.2, or SlimBean 4.3 build 2.2 stable (too awesome), or PAC-MAN ROM, or Carbon, Cyanfox...
6- For 4.4 KK ROMs, try out Cyanogenmod 11.0 nightlies or sanpshots, or go for OmniRom 4.4, or Cyanfox 4.4, or SlimKat, BeanStalk...
It's your choice, and I would recommend installing Dorimanx Kernel above the ROM you choose in order to configure your CPU clock speed and processor governers according to your kind of usage. Good luck :good:
pizza HUT !
Paul_Kolanjian said:
Buddy, you haven't seen the real part of Android yet. Considering your battery issue, remove the battery and simply touch it in the middle. If the battery is swollen or bloated, then you need a new battery (3 years of usage make your battery weaker and subject to faster draining due to deformation of the cells inside the battery). In no doubt, Samsung's Touchwiz is THE main cause of lagging and drain, so here are my suggestions on ROMs that can fix your problem:
1- For 2.3 GB ROMs, go for CyanogenMod 7.2.0 with siyah kernel 2.6 (google the kernel name to find it or ask me for a link just in case)
2- For 4.0 ICS ROMs, go for CyanogenMod 9 stable on get.cm and go for Siyah 5.0.1 stable for more hardware customizing.
3- For 4.1 JB ROMs. well, you can grab CyanogenMod 10 or SlimBean 4.1 old release for the I9100 but I recommend skipping this version of Android (it's too boring)
4- For 4.2 JB ROMs, try Cyanogenmod 10.1.3 stable. if you love Touchwiz and want a stock experience, try Revolution Rom UX build 2 which is too close to an official 4.2 stock update. When it comes to me, SuperNexus 2.0 is the best 4.2.2 ROM I ever used. Flash Dorimanx 9.43 stable to get more out of your device just in case buddy.
5- For 4.3 JB ROMs, go for CyanogenMod 10.2, or SlimBean 4.3 build 2.2 stable (too awesome), or PAC-MAN ROM, or Carbon, Cyanfox...
6- For 4.4 KK ROMs, try out Cyanogenmod 11.0 nightlies or sanpshots, or go for OmniRom 4.4, or Cyanfox 4.4, or SlimKat, BeanStalk...
It's your choice, and I would recommend installing Dorimanx Kernel above the ROM you choose in order to configure your CPU clock speed and processor governers according to your kind of usage. Good luck :good:
Click to expand...
Click to collapse
dude there a lot of choice here and all of themes look great, i feel like i'm in a pizza hut order :silly:
still i think that am going for this one: 4.4 KK ROMs, Cyanogenmod 11.0 ... it look like the best one for me :fingers-crossed:
so can you make another favorite and show a link to it
Simoco said:
dude there a lot of choice here and all of themes look great, i feel like i'm in a pizza hut order :silly:
still i think that am going for this one: 4.4 KK ROMs, Cyanogenmod 11.0 ... it look like the best one for me :fingers-crossed:
so can you make another favorite and show a link to it
Click to expand...
Click to collapse
Always happy to help fellow users
Well, the thing is CyanogenMod is no no doubt the best, but as for the 11.0 version, no full stable ROM is out there (at least not the tag), but sure-thing it is stable and getting better through every nightly. To get the daily nightlies which are somewhat experimental and buggy, visit get.cm/?device=i9100 and everything is there.
The nearest or at least more stable version of CyanogenMod 11 is the snapshot release (labeled "M") and it's there too. In case your Internet speed ain't too fast, download it through this torrent file I did (It's CyanogenMod 11 M4): http://burnbit.com/download/280529/cm_11_20140308_SNAPSHOT_M4_i9100_zip
Happy flashing :fingers-crossed:
Mod Edit
"Best" or "Recommend" ROM/kernel threads are not allowed on XDA.
Please test these things for yourself.
This is the only way you will get an unbiased opinion,and then, you can decide for yourself if it meets YOUR needs.
Don't forget to make a nandroid before you start.
Thread Closed
malybru
Forum Moderator

[Q] Battery drain when it's less than 40%

Hi. I'm having a big problem with my Galaxy SII GT-I9100. It works normally till the battery percentage gets 40%. After that the phone starts to slow down, screen starts blinking, signal gets lost and at last it turns off. All these happen in a few seconds' time. These are what I did:
1.Changed battery 2 times
2.Calibrated battery with 3-4 apps from play market
3.Wiped everything that's possible. Tried using NeatROM, Revolution , Carbon roms.
4.Took phone to master and realized that he knows less than me.
After all these procedures anything has changed. Please help me solving this problem.
Back to stock to test, still problems ? Replace USB board/port; KeithRoss39 has a guide in General that has all the info you need in order to easily do this yourself (it's not stickied, search for 'replace USB charger board' or similar).
My battery was like that, but I did not have any other problem except battery drain when battery reaches %35, %40. It was draining very fast compared to %80 or %70. First, I bought a fake oem battery, but I thought it was original, seller deceived me, it was worse than dead original battery. Than I bought a real original one and problem is solved. Be careful about those oem ones.
Dampierre said:
My battery was like that, but I did not have any other problem except battery drain when battery reaches %35, %40. It was draining very fast compared to %80 or %70. First, I bought a fake oem battery, but I thought it was original, seller deceived me, it was worse than dead original battery. Than I bought a real original one and problem is solved. Be careful about those oem ones.
Click to expand...
Click to collapse
How can I know if my new battery is original? It looks very similar to very first one that came with phone when I bought it.
Cavidos said:
How can I know if my new battery is original? It looks very similar to very first one that came with phone when I bought it.
Click to expand...
Click to collapse
Me too having the exactly same issue... I have ordered one battery online..dont know whether its OEM or original
pls post if u are getting any solutions....
thanks
Hello,
In order to exactly help you, I advise you to post your currently used firmware (stock Samsung Gingerbread, Ice Cream Sandwich, Jellybean), or if you're using custom OS (CyanogenMod, SlimRom, CyanFox, OmniRom... etc) but anyway, I'll try and help as much as possible. When I had my phone upgraded to stock 4.1.2, I had smooth performance and good battery life. However, after a while, the OS becomes laggy and I get a lot of overheating when the phone should simply go to deepsleep. Simply, I realized that the battery wasn't the problem, but rather, Samsung's TouchWiz was causing the problem. Having owned my phone for a year and 6 months, I get terrific battery life yet through using DorimanX Kernel which can customize your hardware settings to match your kind of usage. Using official SlimKat 3.0 Stable on Dorimanx 10.43v88, I can ger up to 4 days of battery with slight usage even when using Android Run-time. I would rather change the phone's OS instead of buying batteries in your case since changing the stock battery is only optimal in case the battery is bloated (becomes swelled/thickens in the middle). Good luck
Paul_Kolanjian said:
Hello,
In order to exactly help you, I advise you to post your currently used firmware (stock Samsung Gingerbread, Ice Cream Sandwich, Jellybean), or if you're using custom OS (CyanogenMod, SlimRom, CyanFox, OmniRom... etc) but anyway, I'll try and help as much as possible. When I had my phone upgraded to stock 4.1.2, I had smooth performance and good battery life. However, after a while, the OS becomes laggy and I get a lot of overheating when the phone should simply go to deepsleep. Simply, I realized that the battery wasn't the problem, but rather, Samsung's TouchWiz was causing the problem. Having owned my phone for a year and 6 months, I get terrific battery life yet through using DorimanX Kernel which can customize your hardware settings to match your kind of usage. Using official SlimKat 3.0 Stable on Dorimanx 10.43v88, I can ger up to 4 days of battery with slight usage even when using Android Run-time. I would rather change the phone's OS instead of buying batteries in your case since changing the stock battery is only optimal in case the battery is bloated (becomes swelled/thickens in the middle). Good luck
Click to expand...
Click to collapse
I'm currently using Revolution ROM UX 2014 Build 2 Android 4.1.2. It has touchwiz interface, but I've also used Carbon Android 4.3 ROM which had this problem too. I don't believe Dorimanx kernel will fix this problem, but if you're sure about it, I can try.
Cavidos said:
How can I know if my new battery is original? It looks very similar to very first one that came with phone when I bought it.
Click to expand...
Click to collapse
It took me 5 months to realize that. After 3 months battery was not performing well at all and I understood that something is wrong with the battery. I looked very close to it, but it was still seeming like a original one. I put the original one and the fake one side to side, and I saw the difference. There are some small differences. You have to realize by yourself, because there are a lot of fake batteries.
Cavidos said:
I'm currently using Revolution ROM UX 2014 Build 2 Android 4.1.2. It has touchwiz interface, but I've also used Carbon Android 4.3 ROM which had this problem too. I don't believe Dorimanx kernel will fix this problem, but if you're sure about it, I can try.
Click to expand...
Click to collapse
If you're not sure on how to configure your CPU settings in STweaks, you wouldn't realize any difference, but I can help you with that. One day, I was an ordinary Android user on stock 4.0.4 and rooted my device just to get a game work better using a custom kernel (Siyah btw), and when I realized I could tweak CPU clock speeds and edit some values, I realized that Sammy ROMs are too crappy. At the end, that's what power saving option does,limits your CPU clock speed but still not too cool Anyway, no harm in grabbing a kernel and flashing but after reading your post again, it seems your battery is "hard-luck" one, better buy a new one if you really are facing issues unrelated to software

[Q] How's kitkat?

How is everyone liking the KitKat Roms?
I'm thinking of upgrading because I'm getting pretty bad battery life with AJK 4.9 and Supernexus 2.0 (Android 4.1.2). I just got a new battery for my phone and that's when I realized that it wasn't my battery that was the problem.
BUT
My phone's charging port broke recently. Like, the innards of the port make a snap sound and fell out. So I have no USB functions on my phone any more so if my phone bricks mid update, I'm SOL. Also I am swapping batteries out half way through the day because my phone consumes power too fast.
So, any recommendations on KitKat kernels? Roms? I looked at RenderBroken's but I'm not sure if he's in the process of putting a new one up or what. The only downloads on his sight for the i777 kernels were in the "Old Builds" folder.
Also, doesn't holding the power button and both volume buttons boot into recovery? Because it's only going into Odin.
Preferences on ROM's?
Thanks in advance!
I'm sorry, I have a difficult time believing AJK kernel is the reason behind your battery woes. That kernel is very likely the most stable, tweakable, battery-friendly kernel ever made for our device, so if you are getting bad results with that... well, nothing else is going to improve matters.
A few things: stay in your current setup and run Better Battery Stats and Wakelock Detector. Between those two free apps you'll be able to see EXACTLY what's causing your problems.
KK roms take a bit more toll on the battery, and require a lot of tweaking to get things under control, due to the framework changes Google made. If you're worried about battery life you may be better off staying on JB until you discover the real cause of your battery problems.
SteveMurphy said:
I'm sorry, I have a difficult time believing AJK kernel is the reason behind your battery woes. That kernel is very likely the most stable, tweakable, battery-friendly kernel ever made for our device, so if you are getting bad results with that... well, nothing else is going to improve matters.
A few things: stay in your current setup and run Better Battery Stats and Wakelock Detector. Between those two free apps you'll be able to see EXACTLY what's causing your problems.
KK roms take a bit more toll on the battery, and require a lot of tweaking to get things under control, due to the framework changes Google made. If you're worried about battery life you may be better off staying on JB until you discover the real cause of your battery problems.
Click to expand...
Click to collapse
I'm not worried about battery life so much as I just want to get through most of my day without having to swap batteries (which are brand new mind you). I updated to SuperNexus 3.0 so we'll see if there's any improvement of battery life.
What do you think about KitKat so far though?
vex390 said:
I'm not worried about battery life so much as I just want to get through most of my day without having to swap batteries (which are brand new mind you). I updated to SuperNexus 3.0 so we'll see if there's any improvement of battery life.
What do you think about KitKat so far though?
Click to expand...
Click to collapse
I would advise you to stay off of Supernexus roms; they've long been abandoned and 3.0 especially was buggy. Try Renders' CM builds if you're wanting supported stable builds, or look in the ported section. Overall KK has performed great for me.
SteveMurphy said:
I would advise you to stay off of Supernexus roms; they've long been abandoned and 3.0 especially was buggy. Try Renders' CM builds if you're wanting supported stable builds, or look in the ported section. Overall KK has performed great for me.
Click to expand...
Click to collapse
Ahhh but that means I have to switch kernels because I'm using AOSP. What about Render's 4.4 kernel? I looked at his thread but the link to the download only shows old versions. Are there any other 4.4 kernels working?
No, his kernels are great, you have nothing to worry about. Just make sure you thoroughly read what's required to make the jump to KK before you attempt it.

[Q] omni vs cm 11 vs slimkat

at first: this is not a "whats the best rom" thread.
i have 2 very focused questions:
What are the idle times with those different roms?
Are there some Main feature differences?
Aktually im running cm11 m5 snapshot with smartassv2 Governor. its smooth but the battery life is kinda poor.
Im looking for a rom with long battery life. And i dont care about google now, talking to my phone(ok google) nor i need the special features from the standart samsung rom.
Would be realy helpfull if u can review to my questions. Greetings!
pls apologize my bad english.
1 each phone is different depending on what's installed and running.
2 read there threads or flash each ROM and find out that way. You forgot about aokp?
andrewwright said:
1 each phone is different depending on what's installed and running.
2 read there threads or flash each ROM and find out that way. You forgot about aokp?
Click to expand...
Click to collapse
2. thx for informing abaout aokp!
1. im asking for someone who did a test with the same phone and all roms. i dont ask for different situations, i sked fpr idle time and features!
Probably there is somebody out there who testet it and can present his results
twinko said:
2. thx for informing abaout aokp!
1. im asking for someone who did a test with the same phone and all roms. i dont ask for different situations, i sked fpr idle time and features!
Probably there is somebody out there who testet it and can present his results
Click to expand...
Click to collapse
There are no definitive results, I have used both and I keep coming back to Omni due to the fact that on SlimKat music stutters like crazy when the screen is locked. Also, Omni updates are small enough to update often without having to download a complete update, to many users this a huge deal due to data limitations in certain countries. As for usage, idle time etc, like stated before, that depends entirely on what is installed on your device. Install a bunch of apps that need to constantly receive data updates and you will have battery drain and very little deep sleep. Where features are concerned, you kinda learn to live with limitations due to missing features on a specific rom. If you really want, you can most likely find an app that will bring a missing feature to a rom. I see a lot of people throwing their toys out the cot because one of the other does not have a specific feature implimented, yet the developers have done so with good reason, usually either performance or battery life.
With all said, there are many roms out there, Omni and SlimKat aren't the only players. It's difficult to compare roms nowadays because you are never quite sure if your kernel tweaking or custom kernel with it's hundreds of tweaks is the reason for a device not going into deep sleep either.
Give them all a try and decide for yourself, nandroid backups and apps like Titanium Backup makes it so easy.
cornelha said:
There are no definitive results, I have used both and I keep coming back to Omni due to the fact that on SlimKat music stutters like crazy when the screen is locked. Also, Omni updates are small enough to update often without having to download a complete update, to many users this a huge deal due to data limitations in certain countries. As for usage, idle time etc, like stated before, that depends entirely on what is installed on your device. Install a bunch of apps that need to constantly receive data updates and you will have battery drain and very little deep sleep. Where features are concerned, you kinda learn to live with limitations due to missing features on a specific rom. If you really want, you can most likely find an app that will bring a missing feature to a rom. I see a lot of people throwing their toys out the cot because one of the other does not have a specific feature implimented, yet the developers have done so with good reason, usually either performance or battery life.
With all said, there are many roms out there, Omni and SlimKat aren't the only players. It's difficult to compare roms nowadays because you are never quite sure if your kernel tweaking or custom kernel with it's hundreds of tweaks is the reason for a device not going into deep sleep either.
Give them all a try and decide for yourself, nandroid backups and apps like Titanium Backup makes it so easy.
Click to expand...
Click to collapse
Thx for your long, interessting and helping text!
im missing only 1 thing. if someone flashes all roms, doesnt install any apps. Only new rom and full wipe before, restart and tracks the time the phone has battery. Dont u think this is a possibility to compare the roms battery usage? i think there is no one who does this, but i probably will try this and put down a little table here. so people like me are able to see the rom with the best battery efficiency. so if they decide this rom has not enough performance, they can switch to "battery efficiency Number 2" and so on.
greetings
twinko said:
Thx for your long, interessting and helping text!
im missing only 1 thing. if someone flashes all roms, doesnt install any apps. Only new rom and full wipe before, restart and tracks the time the phone has battery. Dont u think this is a possibility to compare the roms battery usage? i think there is no one who does this, but i probably will try this and put down a little table here. so people like me are able to see the rom with the best battery efficiency. so if they decide this rom has not enough performance, they can switch to "battery efficiency Number 2" and so on.
greetings
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Sure you can do what you stated but bear in mind how will you compare the battery life across roms..
There should be some standardized test... Like looping video playback or some other method which does not change based on you usage habits..
Sent from my GT-I9300 using Tapatalk
Pa is another you're missing from you're list of developed roms. What you could do is test video playback, calls incoming/outgoing,one game of choice "high end battery draining game" and compere them all. As for the kernel tuning.. Read about what really happens and you will fine not a lot does happen with UV/uc .
twinko said:
Thx for your long, interessting and helping text!
im missing only 1 thing. if someone flashes all roms, doesnt install any apps. Only new rom and full wipe before, restart and tracks the time the phone has battery. Dont u think this is a possibility to compare the roms battery usage? i think there is no one who does this, but i probably will try this and put down a little table here. so people like me are able to see the rom with the best battery efficiency. so if they decide this rom has not enough performance, they can switch to "battery efficiency Number 2" and so on.
greetings
Click to expand...
Click to collapse
You can compare but you have to use that phone for more days not like just one and you have to full charge and then discharge 2 or 3 times till the phone make the correct battery stats. So i think you can test but better with daily use or get an app that drains battey faster well i think this may work

Battery drains in cm11 + galaxy-s2 - tried all tips

I installed cm11 on my s2 a while ago using the installer and since then im trying to figure out the reason for the huge battery drain. Cm works great but it drains the battery in an average rate of 19% per hour (a special app did the math,and i can clearly see for myself ). I dont do anything more than music, surfing and whatsapp. Android stats usually say the screen is the no1 battery drainer. Android os second.
I searched the internet and tried every possible tip there was. IMO the only thing I hadn't tried is flashing different modem and different kernel (didn't find good guides for it and was afraid to brick the device)
What I have tried:
1. Flashed neatrom just to compare. A little improvement but still not like old days and of its not a good performance like cm.
2. Went back to cm through recovery backup and Used battery stats, taking permissions away from every app with a redundant wake/cpu lock.
3. Got new battery, assuming the problem may have to do with an old battery (bought the device 2yrs ago)
4. Calibrated battery both with the app and also using the manual trick (chrage while phone off, take batter out, wait five mins and put back in).
5. Tried different governors.
Might be forgetting other things. Nothing works!
What can I do? I really wanna use cm and not get lost flashing less good roms.
Thanks
This device uses an old Exynos SoC optimized for Android 4.1, In new versions is normal battery performance loss because there is more consumption of resources
It also warms up and all.... You recommend flashing older version of cm?
Globboxxx said:
It also warms up and all.... You recommend flashing older version of cm?
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Yes, only if you really need more battery life. I have a Galaxy S Advance, who died in the 4.1, Battery life in 4.4(CM) is 30% lower than the official 4.1.

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