I am running KL1 rom with a KK5 rooted kernel.
I get about 1 day and a few hours on a full charge with 3g and h+ network activated, some wifi usage but not much.
My problem is that i get between 29-40% usage of battery on android os.
Is that normal?
Is my battery life normal for what i do with the phone?
I turn off what i don't need and what i don't use gps, wifi etc (except for the data connection).
PS: i know it's a smart phone)
Ps2: i have done a battery calibration, this beeing the result after the calibration.
Hawkeye1103 said:
I am running KL1 rom with a KK5 rooted kernel.
I get about 1 day and a few hours on a full charge with 3g and h+ network activated, some wifi usage but not much.
My problem is that i get between 29-40% usage of battery on android os.
Is that normal?
Is my battery life normal for what i do with the phone?
I turn off what i don't need and what i don't use gps, wifi etc (except for the data connection).
PS: i know it's a smart phone)
Ps2: i have done a battery calibration, this beeing the result after the calibration.
Click to expand...
Click to collapse
Sure it's ok...
U have a normal up to good battery life so no stress.
The question because adnroid os:
It just says that u didn't use ur phone soooo much.
People who using phone a lot more often (surfing, playing and so on) have this or more percent on Display.
So it's just and kind of relation: If u use one thin less and other is getting higher....
CHEERS
To cover this quickly, I'll break it down into three points:
1) you're getting pretty decent battery life; could be better, but a lot of people are getting a lot worse. If you want, PM me and I'll run you through how you can get the most out of your battery - I won't cover it here because it'd be O/T (I think).
2) the Android OS battery issue is well documented here, if you'd used the search tool (which, by the way, has just been improved greatly), you'd have seen the plethora of posts relating to said topic. For now, don't worry about it, there's really nothing you can do.
3) the Galaxy S II uses the MAX17042 fuel gauge, and doesn't need calibration. The best you can do is wipe your battery stats every few months (drain battery completely, plug into charger but do not turn on - allow to fully charge, then boot into recovery mode, go to advanced, and select the 'wipe battery stats' option).
Remember, always use the search tool
screamworks.
Man I use CheckROM v4 with DarkKnight 2.5.2 and life battery is incredibille.
umarian said:
Man I use CheckROM v4 with DarkKnight 2.5.2 and life battery is incredibille.
Click to expand...
Click to collapse
Doesn't matter. Battery life is dependent on literally hundreds of factors, your ROM and kernel don't play the largest part in that. Takeaway note: don't go flashing different ROMs and kernels with the promise of better batter life - yes, some kernels and ROMs might go a bit better than others, but it comes down to a variety of factors including usage environment, usage intensity, installed apps and respective services, etc. etc. etc.
screamworks said:
Doesn't matter. Battery life is dependent on literally hundreds of factors, your ROM and kernel don't play the largest part in that. Takeaway note: don't go flashing different ROMs and kernels with the promise of better batter life - yes, some kernels and ROMs might go a bit better than others, but it comes down to a variety of factors including usage environment, usage intensity, installed apps and respective services, etc. etc. etc.
Click to expand...
Click to collapse
I understood man but i change many roms and I thing the CheckRom with DarkKnight kernel is the best;in my opinion.Sorry for my bad english
umarian said:
I understood man but i change many roms and I thing the CheckRom with DarkKnight kernel is the best;in my opinion.Sorry for my bad english
Click to expand...
Click to collapse
Wasn't having a go at you, I was just making sure the OP understood that just switching to that combo won't fix things
Related
Hi guys sorry for this thread new here so please go easy on me. Had a galaxy s2 for a few weeks now and i have to say best phone ever. Did the normal rooting and flashing roms and i have noticed recently that my battery has been going down quite a lot after a few hours. I tried roms like Villainrom, Cognition, Batista and etc which i find them very good but on my battery stats it says that i have high display usage and the percentage is like 56 - 85 and sometimes goes and stays to 91. i have since then when back to 2.3.3 stock firmware rooted it as well and i only have display percentage of only 25% which i think is normal and my battery lasts longer. I have spoken to Samsung regarding this situation and they are sending me a new battery but im just wondering why i cant flash a custom rom without having to worry about the high display % and what can i do to fix it? do i have to give it a few days for the battery to settle on the rom or shall i just stay with the stock rom for now till i get my new battery and then try to flash? sorry for the long essay i just need to find out if any one else had the same problem as i really like to use a custom rom that my normal one.
THanks
I too find it very hard on the battery with all the custom roms that I have tried out. I tried, Villain, Cogniton, LeoMar, Batista, etc..etc..etc. I have in fact tried out all the ROMs out here. Tried even different combinations of Kernel, but all only lead to the frustration when it comes to battery life. I finally tried MIUI ROM and I can say that it is giving me very good battery life compared to other ROMs.
It is interesting to note from you that the STOCK ROM has given you better battery life. Could you please tell me how long did your battery last in Stock ROM and what are the Apps that were running in it?
Install Better Battery Stats, I don't think anything wrong with the battery.
See under Wakelocks what apps/processes are going in background and causing the drain. Then take necessary steps with TB Pro.
Sent from GT-I9100
to xdadeveloporian: thanks for your reply bk and sorry to hear that you had the same issues. like i said above i am very new to all this so apologies if i am replying with noobish comments. with wifi on and the normal widgets i had a battery life over a day. only charged it once and it still going. is that rom that you using now good?
and to ithappy sorry what do you mean by your reply i do not understand sorry. and do you guys think with a new battery it will fix my problems and i will be able to flash roms or do i have a faulty phone?
% is not important, what really matters is total time on for the display. Are you sure it isn't that the stock ROM burns more power in other areas, so the display is less? Or maybe the brightness is different? I'm not even sure how the display proportion of battery drain is apportioned - is there really a current sense integrator?
now that i have the stock rom with firmware 2.3.3 display is 30% followed by android os 15 - 19% which i think is normal into regards were i was on customs roms and the os was 15% and display 50% and over. brightness is basically at the lowest i can put it i am using touchwiz launcher and i only have two pages with widgets and nothing else. just a bit confusing thats all. i mean with custom roms the battery should be alot better not the other way round if you get me.
apologies if im not making any sense here. thanks again for all your replies it does help
tjoannou2001 said:
i mean with custom roms the battery should be alot better not the other way round if you get me.
apologies if im not making any sense here. thanks again for all your replies it does help
Click to expand...
Click to collapse
I don't believe that stuff, why battery life would be better in a Custom ROM, because they added/modified some stuffs, nah. You can make a Stock ROM custom with some little modifications if you are rooted and have great apps like Root Explorer, Titanium Backup etc. I, for me, will never ever use a Custom ROM. But that's just me, don't take it any personally.
And about battery, don't see that how long are you getting with it, like- 1 day, 2 days, they don't make any sense, just keep an eye on the 'Screen On' time, if that is around or above 5 hours then you are very fine. And also keep checking that your Awake and Screen On bar is synchronized or not, if it is not then you must have something going on background, like- Latitude, Email exchange etc. which you can see under Better Battery Stats. And also, when not needed turn off, 3G, Packet Data, WiFi, Auto Sync, Background Sync and check how many apps are on Auto Sync, if not needed then modify it to Manual Sync.
Regards.
ithehappy said:
I don't believe that stuff, why battery life would be better in a Custom ROM, because they added/modified some stuffs, nah.
Click to expand...
Click to collapse
Maybe they fixed some bugs - specifically a custom kernel might have improvements or bug fixes (since there is lots of work going on here from many companies making contributions). This takes time to filter through to the official ROMs.
Maybe they removed some of the stock apps which contribute (maybe only slightly) to power drain.
Maybe the small differences in the ROM mean that existing bugs are less likely to have an impact, so even not fixing the bug it seems to have gone away.
Custom ROMs are as likely to make things worse - but if many people are affected then it is likely that someone will track down the reason.
Look all i know is that as soon as i started flashing custom roms on my phone my battery life has been going down like hell. Checking battery stats the most thing that is taking up battery life is the display being as high as 80 even 90 percent. I am not a expert on android having had an iphone all my life so when people say underclocking and other stuff its like new things to me so i do apologise for being such a noob. i do love my galaxy and i think its the best phone out there at the moment. all i need to know is if there is something that i can do to bring the display down and not to have it drain so much out of the battery..
Thanks again for everyone for replying
very niceeeeeeeeeeeeeeeeee
huh? has anyone else experience high display usage on their phones when checking battery stats?
is that from the android market i can get that app?
tjoannou2001 said:
is that from the android market i can get that app?
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1179809
hi just wanted to ask if there is a ROM there that is as close as the original ROM of the samsung galaxy s II in terms of apps and looks but is tweaked for better battery perfomance?
cause my dad bought a SGSII almost a week now, and we only get about 5-6 hrs of it using only it. already did about 4 charge cycles. (4 only cause most of the time the GSII is off, my dad's getting a hang it yet)
config:
- stock android 2.3.3
- 3g auto
- auto backlight (but we are inside a mall so the backlight is isn't that bright & have strong signal)
- auto sync is off
- background data is on
- haptic feedback is off
- audible selection is off
- fast dormancy is off
- power saving mode is on
- juice defender app in balanced setting
apps running:
-skype
-messenger
it drains a LOT even in standby a lot more when using it (browsing, not yet chatting). my hd2 is much more efficient knowing it is not a native android smartphone...
is there a tweaked battery efficient rom there that is as close or at least still looks as the stock?
You can do three things,
1- Install Better Battery Stats and see under 'Partial Wakelocks' to see whats running on background.
2- Stay on Stock ROM and flash a kernel which allows Voltage tweaks and install SetCPU and Undervolt CPU. Ninphetamine 2.1.3 is such a kernel.
3- If thats too complicated for you, then flash an Undervolted kernel, like SpeedMod.
I won't advise you to change to a Custom ROM for battery backup betterment. But doing the above processes will certainly save some.
Regards.
Sent from my GT-I9100 using XDA App
ithehappy said:
You can do three things,
1- Install Better Battery Stats and see under 'Partial Wakelocks' to see whats running on background.
2- Stay on Stock ROM and flash a kernel which allows Voltage tweaks and install SetCPU and Undervolt CPU. Ninphetamine 2.1.3 is such a kernel.
3- If thats too complicated for you, then flash an Undervolted kernel, like SpeedMod.
I won't advise you to change to a Custom ROM for battery backup betterment. But doing the above processes will certainly save some.
Regards.
Sent from my GT-I9100 using XDA App
Click to expand...
Click to collapse
thanks for the quick reply, so custom kernels work with the stock rom...i thought it won't. i'm not that familiar yet with native androids cause in HD2 most of the undervolted kernels there are already built in the roms so i don't change it that much now with the NAND builds....but anyway, i'll try for the mean time # 1 & 3....i'm not that into that #2 tweaks yet in a phone that is not really mine....
It is proven that Stock ROM's with custom Kernels have sweet battery life. As with Stock ROM's they haven't tweaked anything, it's just stock and you flash what YOU want, whereas a custom ROM you're getting things you dont infact need.
I keep going back and forth from Custom ROM's to Stock ROM's.
Hi
I would also recommend looking at SicOpat's ROM (http://forum.xda-developers.com/showthread.php?t=1183774)
This is essentially a stock, rooted ROM with a custom kernel and I find it exceptionally good.
The other thing I would recommend then is to install Titanium Backup and freeze/uninstall a lot of the Samsung apps - WiFi Sharing, software update, *hub stuff. Removing these has a very positive impact on battery life.
Hope this helps.
-Barry
I have also been troubleshooting poor battery life on my phone. I used to lose 10-15% an hour just idling. I reflashed Stock KH3 with the KH3 CF-ROOT kernel and reinstalled a few things (twitter, yahoo messenger, google voice, and some apps that don't sync data). Currently I had 18hrs now with 60% left. MUCH better. A lot of the time the phone was idle but I did listen to music, play some games, and browse the internet/chat, use wifi a bit. Phone only lost like 4-6% overnight. (sorry I don't have hard figures but I didn't document any of it on paper). I'm trying to find out what was killing my battery so I am installing things little by little but I would definitely recommend stock KH3. Seems great so far.
I think your problem lies with the wifi-sharing battery bug. I hear this is updated in newer roms. This was the biggest battery hog on my phone, but after noticing it, my battery life is excellent now.
When Wifi is turned on/off this erroneous process starts in the background called "Wifi-Sharing". It hides and drains your battery at a VERY fast rate. The remedy is simply to "Force Stop" this process after you use Wifi.
Let us know if that helps.
You could root the phone and install Titanium to freeze this process permanently.
Please use the Q&A Forum for questions Thanks
Moving to Q&A
sorry for the wrong forum i got messed up in opening a lot of samsung galaxy sII threads....
i dont see the "wifi sharing" in my dad's GSII when we used it. and as with kies, i think JKG2 firmware is the latest, so i assume that the wifi sharing bug has been fixed there, yes?
i know it would consume a lot since the GSII has a big "engine" but i didn't expect it to eat a lot even on standby with only YM and SKype messengers running in the background.
i'm still observing it. i'm still running stock.
EDIT: i just used wifi to download an app then when look for running apps, i saw "wifi-sharing" is running but i didn't even turned it on
i just flashed Speedmod T38 kernel (it seemed less complicated to use ) now observing if my dad's SGSII gets better
I'm a new Galaxy S II (and new Android) user, and am a bit disappointed in the battery life of my new phone. It was running down extremely quickly yesterday, only lasting about 12 hours with relatively normal use (sending half a dozen texts, downloading 2 apps, checking Facebook and Twitter once an hour or so for a couple of minutes throughout the day). I allowed the phone to discharge completely and charged it fully last night, but this morning nothing seems to have improved. I burned up 10% of the battery in half an hour sending 2 texts, checking my emails, Facebook and Twitter and downloading and trying out a couple of apps.
I'm anxious to know if there's a bit of a burn-in time with the battery on this thing - does it get better after a few charges? I see a lot of people saying they can have the phone on for a few days in some cases, but that's definitely not my experience thus far.
I've installed JuiceDefender (balanced profile), AutoKiller Memory and Advanced Task Killer to try to sort things out but none of them seem to having too much effect and to be quite honest I'd rather not have to compromise my experience by running a number of apps like this to try to extend my battery life at all (nor do I want to have to turn the brightness right down to an unusable level, or set black wallpapers for example).
Does anyone have any real advice on this? I'm starting to think that switching ROMs might be worthwhile? I see that the leaked 2.3.4 ROM seems to have better battery life - is this correct? I'm a bit reluctant to switch to any other unofficial ROMs as there are so many I wouldn't know where to start. It seems they all make a lot of changes but I'd want to keep as close to the stock feel as possible, just with better battery life.
no one uses stock roms/kernels nowadays. u should flash a custom rom or kernel since they provided optimizations to batt life.
StevenBX said:
I'm a new Galaxy S II (and new Android) user, and am a bit disappointed in the battery life of my new phone. It was running down extremely quickly yesterday, only lasting about 12 hours with relatively normal use (sending half a dozen texts, downloading 2 apps, checking Facebook and Twitter once an hour or so for a couple of minutes throughout the day). I allowed the phone to discharge completely and charged it fully last night, but this morning nothing seems to have improved. I burned up 10% of the battery in half an hour sending 2 texts, checking my emails, Facebook and Twitter and downloading and trying out a couple of apps.
I'm anxious to know if there's a bit of a burn-in time with the battery on this thing - does it get better after a few charges? I see a lot of people saying they can have the phone on for a few days in some cases, but that's definitely not my experience thus far.
I've installed JuiceDefender (balanced profile), AutoKiller Memory and Advanced Task Killer to try to sort things out but none of them seem to having too much effect and to be quite honest I'd rather not have to compromise my experience by running a number of apps like this to try to extend my battery life at all (nor do I want to have to turn the brightness right down to an unusable level, or set black wallpapers for example).
Does anyone have any real advice on this? I'm starting to think that switching ROMs might be worthwhile? I see that the leaked 2.3.4 ROM seems to have better battery life - is this correct? I'm a bit reluctant to switch to any other unofficial ROMs as there are so many I wouldn't know where to start. It seems they all make a lot of changes but I'd want to keep as close to the stock feel as possible, just with better battery life.
Click to expand...
Click to collapse
It is argued that task killers and memory killers will only make the problem worse. Juice Defender might be useful if you are using it for scheduling sync and turning WI-FI off when the screen is off, but this feature is only present in the Ultimate edition and you can turn off sync and WI-FI manually if you want. Also beware of rogue apps which are syncing all the time. It is normally the main reason of poor battery life.
Other reason, is that whereas powerful tech specs for phones were rapidly developed, battery technology didn't followed the pace. Our simply batteries cannot cope with our beasts.
Also, there is a thing that it's called "new phone battery blues" which is described as poor battery life due to excessive use of a new powerful toy. After you use your phone normally, for the purposes that normally people use a phone, your battery life will became better.
That said, personally I have a spare battery and a spare charger, and when the battery being used is low, I replace it with the charged one. Sometimes it is necessary, sometimes not.
poch_1421 said:
no one uses stock roms/kernels nowadays. u should flash a custom rom or kernel since they provided optimizations to batt life.
Click to expand...
Click to collapse
They also have a tendency to look very tacky I think though. I think Samsung's skin and widgets are pretty nice and don't care too much for the mods I see in the screens of most ROMs. I'm really looking for something very similar to stock, except with better battery life if there are any suggestions? That's why I was thinking of just jumping to the leaked 2.3.4 if it had any noticeable impact on battery life...
Try using better battery stats, link in my sig, to see if you have any wakelocks, the thread has a good howto on using it.
The biggest thing that uses the battery on this phone is the screen, you will get between 4 and 6 hours of screen on time depending on usage and screen brightness.
Sent from my GT-I9100 using xda premium
Get the original samsung 2000mah extended battery kit.
ahh the battery life talk again
brings back memories of the first days of the SGS2
never thought of reading one again
update to the newest ROM
and read the 1000+ threads about this topic
good day sir
StevenBX said:
They also have a tendency to look very tacky I think though. I think Samsung's skin and widgets are pretty nice and don't care too much for the mods I see in the screens of most ROMs. I'm really looking for something very similar to stock, except with better battery life if there are any suggestions? That's why I was thinking of just jumping to the leaked 2.3.4 if it had any noticeable impact on battery life...
Click to expand...
Click to collapse
Fair point - not all of the roms are everyone's cup of tea. My advice, as a starting point is to flash the stock XXKH3 variant for your area, and then flash a custom kernel, such as Ninphetamine's or Hardcore's Speedmod. This will greatly help with battery life, and also give you the ability (via root access) to use Titanium Backup to freeze apps and services you're not using, which is often the major cause of battery drain through 'wakelocks'; apps that prevent your phone from entering Deep Sleep, or continuously wake it up.
Update to the latest version in your area, uninstall those task killers and whatnot or do a factory reset, install the apps that you are going to use normally like facebook twitter and install better battery stats, decrease brightness to your most tolerable level.
use the phone normally and when the battery is low, use the tool provided in android to check if your phone is sleeping when the screen is OFF, if you are having wakelocks, then use better battery stats to find which apps are causing the wake locks.
No need to install battery management apps, or task killers or memory optimization apps (or as custom rom as yet), that would only compound you problem which may be a very small one to begin with
Thanks for the help so far guys. I've installed XXKH3 and flashed hardcore's Speedmod kernel, and am just getting things set back up the way I like them again. I'm going to uninstall the battery saving apps for now and see how the battery lasts the next couple days.
I'll install Better Battery Stats and keep an eye on any wakelocks too.
Thanks for pointing me in the right direction - it was all very simple and quick to get set up; the sheer number of kernels, ROMs, etc. is all a little overwhelming to me right now, being new to Android!
poch_1421 said:
no one uses stock roms/kernels nowadays. u should flash a custom rom or kernel since they provided optimizations to batt life.
Click to expand...
Click to collapse
I'm using stock KH3 with a stock kernel and am perfectly happy with the battery life ...
Im also a noob just got phone. Coming from evo, how do I root,
Sent from my SPH-D710 using xda premium
StevenBX said:
They also have a tendency to look very tacky I think though. I think Samsung's skin and widgets are pretty nice and don't care too much for the mods I see in the screens of most ROMs. I'm really looking for something very similar to stock, except with better battery life if there are any suggestions? That's why I was thinking of just jumping to the leaked 2.3.4 if it had any noticeable impact on battery life...
Click to expand...
Click to collapse
there are other tweaks with custom roms that aren't found in the stock rom (which provides better functionality).
btw, i also suggest u use setcpu to underclock your device to save more batt.
--------
chalid said:
I'm using stock KH3 with a stock kernel and am perfectly happy with the battery life ...
Click to expand...
Click to collapse
wow, good for you
I used HTC Desire before this device, and the roms on there actually hindered battery life, even with all the fancy underclocking, so I am betting, without even attempting to brick my phone, that they are just as overhyped on this phone too.
I get two to three days out of my phone, using it as a PHONE. I can send and receive emails and texts all day, along with phone calls and the occasional browsing and still get at least two days before it dies. I turn off data when I dont want it and stick it in 2G mode and it dares me to kill the battery.
Just let usage settle down and it's fine
Uamore6 said:
Im also a noob just got phone. Coming from evo, how do I root,
Sent from my SPH-D710 using xda premium
Click to expand...
Click to collapse
I used this guide to install the latest firmware, and this guide to root it when I was done.
---------- Post added at 03:11 PM ---------- Previous post was at 02:59 PM ----------
poch_1421 said:
there are other tweaks with custom roms that aren't found in the stock rom (which provides better functionality).
btw, i also suggest u use setcpu to underclock your device to save more batt.
Click to expand...
Click to collapse
I've now installed SetCPU too, set to OnDemand. Thanks for the suggestion!
StevenBX said:
I used this guide to install the latest firmware, and this guide to root it when I was done.
---------- Post added at 03:11 PM ---------- Previous post was at 02:59 PM ----------
I've now installed SetCPU too, set to OnDemand. Thanks for the suggestion!
Click to expand...
Click to collapse
Beware using anything that isnt ondemand on samsung phones, can cause stuttering, that's what I found anyway.
As far as undervolting -25 to -50mv is a safe first bet.
Sent from my GT-I9100 using xda premium
poch_1421 said:
no one uses stock roms/kernels nowadays. u should flash a custom rom or kernel since they provided optimizations to batt life.
Click to expand...
Click to collapse
Which ones provide the best battery life?
It's not very helpful if you don't direct this poor guy in any direction.
Cheers!
vlad88667 said:
Which ones provide the best battery life?
It's not very helpful if you don't direct this poor guy in any direction.
Cheers!
Click to expand...
Click to collapse
Use touch x-power 1.0
It is optimized for battery life
Sent from my GT-I9100 using XDA App
stop the madness.... just disable Gtalk autologin and you'll have x3 batt life....
i'm still on KG2 and see no need to update, as i easily get 2d+ battery life now...
EDIT: oh, and custom roms is for nerds. that's it. stock only.
poch_1421 said:
no one uses stock roms/kernels nowadays. u should flash a custom rom or kernel since they provided optimizations to batt life.
Click to expand...
Click to collapse
That is wrong. I used to have a UGKG2 ROM and since I upgraded to XXKH3, the battery is MUCH better while the GPS pinpoints in less than 3 seconds with a 5meters accuracy.
When i was using 2G the battery life was good for a whole day. How i have switched my connection to 3G, the main problem is the battery life as it drains in a half day. How can i control this ? which application is draining my battery life? what are the other systems that can save the battery life and extend it to a day time when using 3G????
jjegan2111 said:
When i was using 2G the battery life was good for a whole day. How i have switched my connection to 3G, the main problem is the battery life as it drains in a half day. How can i control this ? which application is draining my battery life? what are the other systems that can save the battery life and extend it to a day time when using 3G????
Click to expand...
Click to collapse
There are several threads for this topic.
Why don't you post your question there?
Maybe there is already a good answer for you?!
My recommendation is to calibrate your battery (e.g with BatteryCalibration app from the Market) and un-install all apps you do not need.
Maybe a Task Killer app (I am using Advanced Task Killer from the Market) can help you to eliminate some battery draining background apps.
If that does not help in your case, you can check if your mobile provider supports fast dormancy. If not, you can try to disable fast dormancy in the settings menu appearing after dialing *#*#9900#*#*.
What ROM, kernel and modem is your phone running on?
There are some versions which are better for battery life.
It_ler said:
There are several threads for this topic.
Why don't you post your question there?
Maybe there is already a good answer for you?!
My recommendation is to calibrate your battery (e.g with BatteryCalibration app from the Market) and un-install all apps you do not need.
Maybe a Task Killer app (I am using Advanced Task Killer from the Market) can help you to eliminate some battery draining background apps.
If that does not help in your case, you can check if your mobile provider supports fast dormancy. If not, you can try to disable fast dormancy in the settings menu appearing after dialing *#*#9900#*#*.
What ROM, kernel and modem is your phone running on?
There are some versions which are better for battery life.
Click to expand...
Click to collapse
Dear Friend,
I highly thank you for your reply.
I do have a lot of things that I didnt understand from your reply... Kindly explain me to solve my problem.
1. what is fast dormancy?
2. how do i know my ROM, kernel and modem in my phone?
3. which is the better ROM, kernel and modem for battery life?
jjegan2111 said:
When i was using 2G the battery life was good for a whole day. How i have switched my connection to 3G, the main problem is the battery life as it drains in a half day. How can i control this ? which application is draining my battery life? what are the other systems that can save the battery life and extend it to a day time when using 3G????
Click to expand...
Click to collapse
When I use 3G it drains my battery a lot quicker but that's dependent on a lot of things so it's hard to pinpoint what is wrong.
3G is not as widely used as 2G, well in London anyway, and it'll use up lots of battery trying to get a good signal.
3G uses way more battery than 2G or Edge in general use.
I suggest only using 3G when you need to and don't bother with task killers - they use more battery than they save. I use an extended controls widget to switch between 2G and 3G, and also use Tasker to turn on my data every hour for 5 minutes.
As the poster above me suggests - root your phone, install a custom ROM and a kernel such as Speedmod and try a few modems.
I easily last a day or two now with moderate use so search the development sections on xda to find one that suits you.
Hope that helps.
Find the app Betterbatterystats in market or here on XDA and have a look at the partial wakelocks statistics. They show the apps that keep your phone awake. Try to find better settings for the apps with the highest count.
troffers said:
When I use 3G it drains my battery a lot quicker but that's dependent on a lot of things so it's hard to pinpoint what is wrong.
3G is not as widely used as 2G, well in London anyway, and it'll use up lots of battery trying to get a good signal.
3G uses way more battery than 2G or Edge in general use.
I suggest only using 3G when you need to and don't bother with task killers - they use more battery than they save. I use an extended controls widget to switch between 2G and 3G, and also use Tasker to turn on my data every hour for 5 minutes.
As the poster above me suggests - root your phone, install a custom ROM and a kernel such as Speedmod and try a few modems.
I easily last a day or two now with moderate use so search the development sections on xda to find one that suits you.
Hope that helps.
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Had downloaded and installed and extended controller for 3G, let me see how it works...
Also is it good to root the device rather than having the factory settings????
jjegan2111 said:
Had downloaded and installed and extended controller for 3G, let me see how it works...
Also is it good to root the device rather than having the factory settings????
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Its good root the device if you want to try custom ROMs and kernels. Some are highly optimized for better battery life.
If you do root give VillainROM a go. It looks exactly like stock, is very stable, offers good battery life and has a few themes available for it. I've been running it for a while with speedmod kernel and I'm very happy.
Sent from my GT-I9100
Tried practically every rom under the sun, now back to stock 2.3.5 rom with speedmod kernel, seems the best for battery life, no need to calibrate batteries, this is a myth, simple use for a few days, and all will be well, stay stock, root then try out kernels is my advice.
Oh yes you can do the fast dormancy thing, not that it makes a lot of difference
Calibration of the battery does indeed help. My battery lasted for only 12 hours (100% batterydrain in 12 hours!). This went on for 3 days. I then calibrated the battery through clockwork recovery, without changing anything on the phone. Afterwards I was back to my usual couple of days of batterytime.
I'm currently using CheckRom RevolutionHD, Hardcore Speedmod Kernel k2-12, fast dormancy off and I'm getting quite good results regarding battery life and performance (lost about 1 percent in 8 hours on standby; WIFI always on).
I only calibrate my battery, when I switch to a new romupdate.
Disable fast dormancy could be a bit helpful, if your carrier doesn't support it.
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.