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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.
Now I am running stock KI8 from intratech and CF root, but I am not satisfied by my battery, what you recomend to try? I think maybe try SiyahKernel or you can suggest a rom. Looking for any suggestions
Read battery posts use Better Batttry Stats.
Turn off what's draining the battery. Donk keep flashing roms.
jje
Sent from my GT-I9100 using xda premium
I have Better battery stats but don't understand how it can help to save battery.
Nepyk said:
I have Better battery stats but don't understand how it can help to save battery.
Click to expand...
Click to collapse
If you have done using your phone and will let it lie idle for a while always go to task manager and clean memory
It helps
Just freeze every single thing you dont need through titanium backup.
Worked for me pretty well.
Just be careful with the system apk's, some of those are nessecary to run.
It seems the stock ROM you're on has one of the best battery life. If you're just concerned with just battery life I highly suggest you to stay with your stock ROM and kernel (cf root). The problem might be related to phone usage, maybe too many apps that sync very frequently (facebook, twitter maybe?), in that case you should try to sync them manually.
Anyway if you want to try siyah kernel, I've read that many people experienced good battery life. For me the stock cf root gave me better battery life than siyah 1.7.7 and 1.7.8. Anyway, trying won't do you any bad.
hey
after a night I my battery drop 2%, i think it is to much. Here is some screens maybe you could advise something for my?
Nice to see the thread dealing with rooting, I am just wondering how the battery life is when rooted. I rooted my SG2 and it was great not having to worry about charging every 6 hrs, in fact I was getting well over a day.
I am thinking of rooting although this SG3 seems to be pretty good with the battery, hence my interest in how the battery is when rooted.
Thanks
sr
....well it really depends on what you do with the phone once rooted???
Rooting in itself will do NOTHING to change battery life, all it does is allow you to run apps that require root.
If you were to flash a new kernel or use root apps that adjust things like cpu speed etc then battery life can be affected, but otherwise it will act like an unrooted phone.
Hi to all
I have a rooted unlocked S3 currently on a stock UK ICS ROM (baseband 4.0.4, kernel 3.0.15-928452-user, [email protected] #1, build number IMM76D.I9300xxBLG8).
I get pretty good battery life with this ROM (usually 24 hours with mixed usage of calls/apps/surfing etc) except when the GPS is enabled which seems to deplete the battery pretty quickly.
My questions are:-
Would I see any benefit in terms of battery life bu upgrading to the latest UK stock JB ROM (I think it's I9300XXEMB1 but perhaps someone can clarify)? I ask as, looking through various threads, there seem to be very mixed views and experience.
Is there anything I can do to prolong battery life when I enable GPS?
Many thanks to all who reply :good:
1. I think JB is actually a little better than ICS, but that's me.
2. As a general battery saver, try Greenify from the Play store.
Theshawty said:
1. I think JB is actually a little better than ICS, but that's me.
2. As a general battery saver, try Greenify from the Play store.
Click to expand...
Click to collapse
Thankyou.
So, in your experience, JB serves up battery life that is "a little better" than ICS?
Is there any difference in battery life between the various stock JB ROMS at all?
Btw, thanks for making me aware of Greenify. Will give it a whirl but not sure it can help with battery drain caused by GPS usage..
largeruk said:
Thankyou.
So, in your experience, JB serves up battery life that is "a little better" than ICS?
Is there any difference in battery life between the various stock JB ROMS at all?
Btw, thanks for making me aware of Greenify. Will give it a whirl but not sure it can help with battery drain caused by GPS usage..
Click to expand...
Click to collapse
Well, I don't really remember if it was a little better or a lot better, I tend not to look back on the past, but so far I've seen nothing but positives with JB. I cannot guarantee that it will be the same for you, though. The difference in terms of battery life between the various JB ROMs is negligible.
Well, if you've got Facebook or some other apps constantly wanting access to your GPS, it can cause a battery drain because the GPS is constantly looking for your position. Known culprits are Facebook and Maps, and once Facebook is greenified, you'll see an improvement in battery life, I'm sure of it.
Theshawty said:
Well, I don't really remember if it was a little better or a lot better, I tend not to look back on the past, but so far I've seen nothing but positives with JB. I cannot guarantee that it will be the same for you, though. The difference in terms of battery life between the various JB ROMs is negligible.
Well, if you've got Facebook or some other apps constantly wanting access to your GPS, it can cause a battery drain because the GPS is constantly looking for your position. Known culprits are Facebook and Maps, and once Facebook is greenified, you'll see an improvement in battery life, I'm sure of it.
Click to expand...
Click to collapse
I use GPS mainly for car navigation and also when using a geocaching app. Not sure if an app like Greenify will work or have an impact with those 2 uses but certainly willing to give it a try.
Can anyone point me to the latest JB ROM that I should upgrade to? Anything I need to do to preserve root and unlocked status of the phone?
Cheers
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Okay. So I am currently running shostock3 on my sgs2 with siyah kernal. I read the article from zedomax on galaxys2root.com that it has very good battery life and very stable but when i am running it, I have terrible battery life and i am currently underclocked or whatever the word is. Is there anyway to fix this?
My advice, run SHOstock3 as it was released. It runs great as shoman94 dev'd it.
...and stay away from that web site u mentioned.
Stick to XDA. Period!
Sent from my SAMSUNG-SGH-I747 using xda premium
Yes. I'm running shostock3 with the included kernel and get good battery life.
Sent from my SGH-I777 using xda premium
Getting great battery life on Shostock3 V3.0. Flashed the AJK 1.52s kernel. Checkout Better battery stats...see if you have wakelocks killing your battery. And..I agree that website is no good..stick to XDA.
Sent from my SGH-I777 using xda premium
gainstatom said:
Okay. So I am currently running shostock3 on my sgs2 with siyah kernal. I read the article from zedomax on galaxys2root.com that it has very good battery life and very stable but when i am running it, I have terrible battery life and i am currently underclocked or whatever the word is. Is there anyway to fix this?
Click to expand...
Click to collapse
which siyah kernel u r using. as far as i know theres no siyah kernel to run with shostock 3 except for ajk's (ktoonsez stopped working on siyah kernel for jb i777 after release of 4.3.3).
EQ2192012 said:
Getting great battery life on Shostock3 V3.0. Flashed the AJK 1.52s kernel. Checkout Better battery stats...see if you have wakelocks killing your battery. And..I agree that website is no good..stick to XDA.
Click to expand...
Click to collapse
Most people get really good battery life on SHOstock3. Just search the SHOstock3 thread for the word battery to see what I mean. If you're not getting good battery life, you need to find out what in your configuration is causing the problem, and fix it. There is a thread in the general section started by Entropy512 that you should study to help you identify where the problem is.
I was on GB ShoStock for a long time thinking ICS and JB would never leave me satisfied on battery life.
http://forum.xda-developers.com/showthread.php?t=1353513
Finally came to my senses and tried out ShoStock 3 and have never looked back. To make it short the best Rom Ive ever flashed for any device I have had in the present and past.
You definitely have a rogue app killing your battery, find out which one it is and uninstall.
gainstatom said:
Okay. So I am currently running shostock3 on my sgs2 with siyah kernal. I read the article from zedomax on galaxys2root.com that it has very good battery life and very stable but when i am running it, I have terrible battery life and i am currently underclocked or whatever the word is. Is there anyway to fix this?
Click to expand...
Click to collapse
Sorry you have battery life problems.
I have been running Shostock3 since it came out (it's version 3.02 today!), but I also been on and off at least five (wow can it be that many?) JB roms on my SGH-i777 (won't even mention the # GB roms here!). After trying many, I must agree with the other posters who state that this rom delivers very good battery life when compared to stock and when compared with other custom roms.
Lately, it has delivered the best battery life I have ever had on this phone using any rom (although SlimBean JB provided very very good battery life for me recently as well! Also UnNamed was great for battery life in the old GB days )
I followed the recommendations made by creepyncrawly to read Entropy's (& others) battery notes/faqs. They provide some really good background, some with that typical "XDA flavor" (read technical!. That material, plus some more plain old simple user adjustments to how and what I use on the phone have improved my phone's battery time; and it might help you as well.
It really boils down to the fact that each phone user loads different apps and our usage patterns vary.
Assume that you've flashed it and let it settle for a few days and several recharge cycles. After doing this you can see what YOUR "norms" are. They may be good or bad, but that's the baseline for you with this rom and with the apps and usage pattern you have.
(You can tweak voltage and speed (well, not speed on SS3!), but my experience has been that the more noticeable changes will be by adjusting your pattern of use, or doing the "hunt for the app" (or apps) that are burning down your run times when not in use.
Not many here seem to like or do this, but I would also try one of those "help-you-with-battery-use" apps --like juice defender (Ok, I get that many here seem to think it a waste, but it really did help me --a little-- when I used it); or get DS Battery saver (a bit more aggressive and noticeable, but you also notice the lag while you wait for things to turn on when you want them).
Actually, these may not be precision solutions, and don't focus on your specific phone app use, but they do work in a macro way to slow battery use and simply working with them for a few days or weeks will provide you with a better a sense of what the heck is going on under the plastic; they will cause you to look at what you have/run and when.
Oh, this includes using Better Battery Stats, which is fine for reporting out exactly which the apps behave --or don't-- and by how much and when. I'm not slow (well, that slow but it frankly, it took me quite a while to figure out what I was reading in the BBS readouts and what they meant! (Now, after a year+ or so of using it, I don't even have it loaded, since I've done the fiddling I need --and BBS, plus those other battery apps, helped me to figure out what apps worked well, what apps I was willing to sacrifice battery on and what apps were useless and should be tossed.)
Finally, some roms just don't work for people! So it's not worth the frustration chasing something you may not be able to achieve with this or another rom. (You probably read how individuals have problems that you don't -yet, you run the same rom and the same phone! That is our world. So, too, you will read about some who make amazing claims on how long they continue on one charge. Some are pretty amazing, and some may even be real
My final five cents would be:
#1 run the rom a couple of days, get a baseline. Then switch from Jeboo kernel to AJK's latest for TW (I think it is 1.25ss, but I really also had great results from 1.48s) and run it a few more days. They were pretty much even for me, but others find one or the other kernel makes a real difference!). Compare after doing the same activities through a charge or two.
#2 If your battery life remains "poor," note what poor really is (ex. how much screen time? and how much total run time prior to getting to zero or 10-15%? ...something like that).
#3. Then get BBS and one of the "automatic" battery-saver programs and work with it for about 4-5 days and that many recharge cycles. See what your norms are but do it for the same type of usage!!! If better while using the battery fixers, then you can work at picking off the app or apps that are sucking your battery more than you want. Not as tedious as it sounds. Of course, staying with a rom for three weeks might be a challenge :laugh:, but this is a nice rom to work with.
#4. I don't think you will need to under-volt to get good BL. I wonder if your phone is stable in doing that? Or, does it induce additional lag? That might be a high price to pay for more run time. (You could compare the UV results with your "norm" as well!)
#5. Finally, we are on Galaxy S2 Sgh-i777 -and can change batteries all day long for not so much per battery! It is not elegant, but it works. (Done it myself several times -even with good battery life).
Good Luck!
Best ROM, Good battery life... been with Shoman's ROM since shostock2 never have a problem with the battery life...
Sent from my SGH-I777 using xda premium