I know there are a lot of threads already but bare with me....
A lot of users have been having issues with battery (me inlcuded). These are the following things I have personally tried:
Screen Filter
Freezing Apps in Titanium
Green Power (though I had issues with it not enabling data when screen on)
I have tried VillianRom the CF-Kernel and currently I am on stock K7 and the stock Kernel (rooted using insecure kernel then flashed stock again)(figured that might help since Samsung wouldn't actually sell a phone without testing the battery).
I am not a gamer nor have I been abusing my phone. Today scenario:
(3G/HSPDA always switched on or wifi when available)
Removed phone from charge at 1400 Hours.
Wifi was on till I left home at around 1530 hours during the process I must have barely checked a few messages on Whatsapp and made one phone call. Since then I have been out met a few friends showed off the phone. When I say showed off the phone all I did was this:
Showed the S2 playing a video
Played a song from google music (streaming over 3G)
Used whatsapp for about 10 minutes
Spoke on the phone for a total of 30 minutes
Got back home around 2200 hours and the phone was screaming for attention which I believe on stock is around 15%.
As you can see from above I have hardly used the phone. Now my query is for those users who are not having battery issues. We have had a lot of threads complaining about issues can we just have a brief post from you guys who are having fantastic battery?
Something like:
Firmware
Rom
Kernel
Root Status
Applications Installed/Frozen
Other Steps?
How much juice have you gotten out of it
I think all of this would greatly help. Coz clearly some of us are having problems and some aren't so could we just share the knowledge?
Sorry for my rambling but I wanted to explain all of it as clearly as I could. Instead of starting another thread as to WHAT CAN I DO!?
Cheers.
[EDIT]
Thanks Nebucatnetzer - for sharing
Thanks zkyevolved - for sharing
Thanks 6ITdtvFQqY - for sharing
Thanks OrionCarl - for sharing
Thanks connectandroid - for sharing. Also check out his thread here for information regarding battery pack.
[UPDATE]
I read this in one of the countless threads regarding battery life and android OS eating away battery. Still in the testing phase but it seems this might be a genuine solution as well :
Format your SDCARD. I know sounds stupid but like I mentioned earlier I am still testing this out. Most of us if not all have shifted from our old android to the Galaxy S II. The probability that this might have been without a format to save pictures or some sort of data is most likely. Once again this *might* help. The title hence states update and not *FIX*.
comment away....
Click to expand...
Click to collapse
Cheers.
+1 to the list man ... my battery is **** compared to others here ...
i'm currently running :
VR1.1 with some tweaks (included arabic patch from madmack)
CF-Root Kernel 3.7
froze everything samsung related (hubs, AP news, launcher, wifi sharing, ... etc)
after all this mods and stuff i barely got 21h from it with a very very light usage .. now on standby my phone dropped from 100% to 90% in almost 4 hours of nothing
hope this problem get solved with 2.3.4 update
Seriously guys 125 views and 1 reply?
What happened to all the battery boasters?
......
Rom: Villain
Kernel: CF- 3.7
Samsung apps: all deleted
Usage:
0800 remove phone from charger
Through the day a lot of surfing and xda app. Average screen on time 2 hours.
1730 Back at home ca. 40% left.
Full sync the whole day and always hsdpa never wifi
brightness auto
Hope that helps you
Greetz Nebucatnetzer
Sent from my GT-I9100 using XDA App
Firmware & Rom: I don't know the difference between firmware and rom, so I'll put this: Baseband - I9100BUKE1
Kernel: OEM 2.6.35.7-I9100BUKE1-CL182896
Root Status: No
Applications Installed/Frozen: None
Other Steps? : Wifi on most of the day, 3G off unless necessary. GPS off Screen brightness: auto
How much juice have you gotten out of it: 4 hours of screen on time, or 24 hours of light use. Usually 16 hours of 3.5-4 hours of screen time.
I hope this helps. Ah not to mention, I have had this phone for 5 days now, and I haven't had ANY Samsung apps show up.
Here is an image of my list of services, but I must say, I unplugged it last night at 10 PM, and left it mostly alone until this morning. That's why my screen usage is so low. In other threads i've posted a lot higher screen on time . But it's just to show you that on KE1 there is no Samsung services going rogue.
One step forward two steps back while charging!
I had the bizarre issue last night where my S2 was losing power while it was charging. Only app running was Words with Friends (checked cpu usage and seemed ok) and I had Screen Filter running at 60%
Phone was near dead by 9pm even though I had topped it up during 2x 30min drives. Was playing Words against 4 family members (all on their iPhones) and I had to give up trying to play while huddled on the floor by the socket as it slowly dropped percent by percent lower.
Not Happy!
KE7 btw
I had a ****ty battery life too but then after reading some tips how to improve it, I froze wifi sharing in Titanium Backup and disabled Google Latitude (not sure which one did the trick but if I had to choose, I guess Latitude was the issue since Maps was always showing up in Battery usage) and now my battery life is perfect. Before my phone would die after like 8 hours and now 24 hours is no problem . I hope the new firmware will fix Latitude but until then, battery life > Latitude. I'm on VillainRom 1.1 and CF-Root 3.7 btw.
ActiveSync
I had an activesync account which really chewed on my battery, had only about 12 hours battery life. After removing the activesync account it lasts at least 40 hours!
i have mobile internet on 24/7, everything syncs every hour, if i dont touch my phone all day, it drops from 100% to 90% from 8am to 4pm....I use my phone for music most of the day for music, txting ect, easily has over 50% by end of the day...cant understand why so many people have problems!
OrionCarl said:
i have mobile internet on 24/7, everything syncs every hour, if i dont touch my phone all day, it drops from 100% to 90% from 8am to 4pm....I use my phone for music most of the day for music, txting ect, easily has over 50% by end of the day...cant understand why so many people have problems!
Click to expand...
Click to collapse
Could you please share specific details from the first post, it would be highly appreciated.
In general a message to everyone who posts. Please share your details (Only if you aren't having issues).
Cheers.
Battery is always the problem and it will hinder the development of smartphone or other PDAs. Maybe we should get nuclear battery
Always turn 'mobile data' off when you are not using your phone. I travel a lot with work and can tell a huge difference in battery life depending on where I am. If you leave 'mobile data' on where 3G service is bad, your battery will drain fast.
Firmware - Default KE2
Baseband - I9100XXKDJ
Kernel - 2.6.35.7-I9100XWKE2-CL187606, [email protected] #2
Other - 3G connection, no 3G packet data, no WiFi, no GPS, looking at the time from time to time, screen brightness either small or auto
I have none of the problems mentioned by others (like display banding, tint, unstable WiFi, the pink camera spot is small), if this makes a difference.
(By the way, the number within the battery compartment says i9100H)
I get about 11% battery discharge per 24 hours
ChesterZZ said:
... and disabled Google Latitude (not sure which one did the trick but if I had to choose, I guess Latitude was the issue since Maps was always showing up in Battery usage)
Click to expand...
Click to collapse
How did you remove Latitude? I c an not find it in Titanium Backup.
Sent from my GT-I9100 using XDA App
I didn't remove it, just signed out. Maps -> Latitude -> Settings -> Sign out of Latitude. Hope it helps
huzz said:
Could you please share specific details from the first post, it would be highly appreciated.
In general a message to everyone who posts. Please share your details (Only if you aren't having issues).
Cheers.
Click to expand...
Click to collapse
sorry bud, here u go:
PDA:KE7 PHONE KE4
STOCK ROM
[email protected]#2
UN ROOTED
FANCY WIDGET PRO WIDGET
2 days under normal use quite happily
huzz said:
Seriously guys 125 views and 1 reply?
What happened to all the battery boasters?
......
Click to expand...
Click to collapse
They can't reply because their S2 ran out of juice.
Sent from my GT-I9100 using XDA Premium App
OrionCarl said:
sorry bud, here u go:
PDA:KE7 PHONE KE4
STOCK ROM
[email protected]#2
UN ROOTED
FANCY WIDGET PRO WIDGET
2 days under normal use quite happily
Click to expand...
Click to collapse
Thanks!!
M.N.M said:
They can't reply because their S2 ran out of juice.
Sent from my GT-I9100 using XDA Premium App
Click to expand...
Click to collapse
LMAO! well hope they share when they finally get around to it
Cheers
huzz said:
As you can see from above I have hardly used the phone. Now my query is for those users who are not having battery issues. We have had a lot of threads complaining about issues can we just have a brief post from you guys who are having fantastic battery?
Something like:
Firmware
Rom
Kernel
Root Status
Applications Installed/Frozen
Other Steps?
How much juice have you gotten out of it
I think all of this would greatly help. Coz clearly some of us are having problems and some aren't so could we just share the knowledge?
Sorry for my rambling but I wanted to explain all of it as clearly as I could. Instead of starting another thread as to WHAT CAN I DO!?
Cheers.
Click to expand...
Click to collapse
Whichever way you swing it, Android battery life ain't that great... i'm coming from a Nokia phone which had 7-10 days per charge.
S2 is my first Android phone it's stock unrooted, Optus Australia version. With 100% wifi on, I get 9 1/2hrs out of box, 19-20hrs with Juice Defender free and 52hrs with XP8000
full details http://forum.xda-developers.com/showthread.php?t=1115104
phone details
Code:
GT-I9100
Android 2.3.3
I9100XXKDJ
2.6.35-7-I9100XWKE2-CL187606
GINGERBREAD.XWKE2
PDA: I9100XWKE2
PHONE: I9100XXKDJ
CSC: I9100PSKE3
Build Info: Fri May 6 07:48:55 KST 2011
Haven't flashed it yet as phone is only 10 days old, so giving it sometime and probably wait for 2.3.4 to come out. I know KE7 is meant to give me better battery life, so may do the update or wait for 2.3.4.
My advice just get an external battery pack. My Energizer XP8000 will give me 2-5hrs extra S2 battery run time per 1hr on the charge (basically every 1hr 25-30% charged). So if you're away from home or at work, plug in XP8000 for 1hr and give the S2 a 2-5hr top up charge. But probably quicker to charge on S2 AC adaptor as USB = ~450mah and AC = ~650mah. So on AC every 1hr on charge = 40% top up on S2 battery life.
The added bonus of XP8000 is it has tips for 1000s of devices, so i can use it for my Acer 3810T notebook too which gets 10hrs itself and XP8000 can give it an extra 4 1/2hrs on top.
One thing I notice is I'm getting better battery life after each successive charge, with Juice Defender free started out around 17-19hrs, then 19-20hrs and now 23-26hrs. Been charging off XP800 @450mah for past 4 charges maybe it conditions battery batter than AC @650mah ?
connectandroid said:
Android battery life ain't that great... i'm coming from a Nokia phone which had 7-10 days per charge.
Click to expand...
Click to collapse
A phone and a PDA (so called smartphone) are two different animals.
I forgot to say that my 3 years old HTC Polaris (with Windows Mobile 6 and a 2.8 inch LCD display) had about 12-14% battery discharge in the same conditions (but the battery was smaller, like 1300 mAh). Just for comparison for those who believe that Android is at fault.
Related
I have a LG optimus One P500 with 2.3.3 stock OS and i have high battery consumption . i check the battery status in the morning and it shows that cell standby and phone idle takes 45 - 50% after 1d and 6h .
Is this normal ? It happens every one or two days. So when i go to bed the device is charged but in the morning i have 75% of battery left.
excuse my english !
P.S. with only 3 or 4 apps installed ! that does not cosume battery .
Please help or advice!
Hmmm doesnt seem normal.I get just 1-2% battery drain overnight,but i have rooted my phone and installed franko gb kernel.U can read the guides and try installing this kernel.
P.S:I also had somehow high battery drain with stock kernal,but not as much as yours.
I had a similar situation once. I fixed it by copying all the files off the SD card, format the card (using the menu on the phone settings-storage-format) then copy the data back.
It appears a something was going wrong with the card.
Ice
thanks i will try this at first and see if the problem is solved . If not i dont know...
It drains battery on GB !(Lg Optimus One P500)
So after 13 hours my battery was at 19% on my Lg P500
I checked in Settings/applications/Battery use and guess what :
Cell stanby 31%
Phone idle 30%
voice calls 39% , and when i tapped the meter on top of the display to see the graffic i found out that the line assigned to "awake" it is uninterrupted.
And now after 1 hour after charging the battery use section : cell standby 50%
phone idle48% and display 4% ! AND all the lines in graffic are also uninterrupted.
ADVICE NEEDED !
dinuyoro said:
So after 13 hours my battery was at 19% on my Lg P500
I checked in Settings/applications/Battery use and guess what :
Cell stanby 31%
Phone idle 30%
voice calls 39% , and when i tapped the meter on top of the display to see the graffic i found out that the line assigned to "awake" it is uninterrupted.
And now after 1 hour after charging the battery use section : cell standby 50%
phone idle48% and display 4% ! AND all the lines in graffic are also uninterrupted.
ADVICE NEEDED !
Click to expand...
Click to collapse
If the Awake bar is uninterrupted, then some background apps are running continuosly in the background, even when the phone's screen is off. This should not happen unless you have turned ON data-sync and if you've applications which try to connect to internet every 10 mins like facebook, twitter. Check these. You can see what are all the applications running in the background in Settings -> Applications -> Running Services
Yeah...such applications do sync often and you have to make sure that they dont sync every 30 mins for example.
Having root and installed setcpu could makes such differences, for instance, you could make a custom Sleep profile, which undervolt your cpu frequencies when the display is off. Having this and your phone could get enough sleep while you were
Regards
Did you transfer songs or any other media recently? My stock phone had a bug wherein a new media transfer would trigger an unending SD Card scan which would suck battery like Ms. Jameson.
I solved it by deleting those files.
istoner said:
Did you transfer songs or any other media recently? My stock phone had a bug wherein a new media transfer would trigger an unending SD Card scan which would suck battery like Ms. Jameson.
I solved it by deleting those files.
Click to expand...
Click to collapse
How did you discover that this bug was active? Would it actually keep saying Scanning SD Card or something? Because I have had noticeably higher battery drain just yesterday after transferring all my old files back into a newly partitioned card + newly flashed ROM. Just using the ROM and card before moving the files gave me a maximum of 1 day and 5 hours... Today it went to 50% in 8 hours.
I did but by usb cable. After that i erased all data.
Today after 12 hours i have 76% left . It's very strange! Do you have an explanation? I wonder.
Thanks
istoner said:
Did you transfer songs or any other media recently? My stock phone had a bug wherein a new media transfer would trigger an unending SD Card scan which would suck battery like Ms. Jameson.
I solved it by deleting those files.
Click to expand...
Click to collapse
Sent from my LG-P500 using XDA App
Oh so that worked? Great.
I was testing a friends music player app when it happened to me. I told him that his album art rendering was very buggy, so we both ended up investigating and he found that the stock rom was performing continous scans. I didn't see icons or anything.
Sent from my LG-P500 using Tapatalk
How can you tell if your phone is continuously scanning the sd card?
We at caynogen mod 7 enjoy the sleep button about zero percent change in sleep mode ...its great .. well I was no help to you but I hope you fix your problem
KickAss City Mik_CM7 FK V18.BFS
Indeed it's drained battery terribly after upgrade stock rom to official version 2.3.3 (V20D in my country). I have the same problem as well. I found it 25% battery life gone after 4 hours from fully charged status before upgrading to version V20D. I did try playing or testing the GPS & data network 2G (GSM) around after done upgrade. Previously in V20G Android version 2.2.2, 1 full day drained battery for about 30% only.
I have tried GO Launcher EX app before on v2.2.2. I wonder if I should install this launcher app again. Will Launcher app drain more battery life or save power battery? Seeking any recommendation from xda experts here. Please advise.
Thank you.
drains no more
Now that you have 2.3.3 you must kill some apps . try in settings/apps/running and see what apps are active ,then you go to all apps and close apps that are running.
In my case google maps , facebook , yahoo mail and another 2 apps drained my battery . So i closed them and it's ok ! Now every time i use them i stop them after.
zhinigami said:
Indeed it's drained battery terribly after upgrade stock rom to official version 2.3.3 (V20D in my country). I have the same problem as well. I found it 25% battery life gone after 4 hours from fully charged status before upgrading to version V20D. I did try playing or testing the GPS & data network 2G (GSM) around after done upgrade. Previously in V20G Android version 2.2.2, 1 full day drained battery for about 30% only.
I have tried GO Launcher EX app before on v2.2.2. I wonder if I should install this launcher app again. Will Launcher app drain more battery life or save power battery? Seeking any recommendation from xda experts here. Please advise.
Thank you.
Click to expand...
Click to collapse
if you Maps installed then Uninstall it.
it starts up any time it wants and takes a lot of battery.
Hello.
First I would like to thank istoner for the this great advice. I had the same problem with my optimus one and this helped me a lot.
I just bought the phone a week ago and about 3 days ago i installed winamp app and transfered a few mp3's on the sd card. Just last evening, when i stumbled into this topic, I realised that my high battery drain problem started just after i did the fore mentioned changes to my phone.
Yesterday(data from "Battery use" in Settings) with ~14h since full charge i had like 20% battery left with moderate use during day. So after that, I followed this advice and removed the whole folder from sdcard containing the mp3's and let the phone charging over night again. I used the phone with the same moderation as yesterday. As i'm writing this i'm reading from "Battery use" a 13h 52m uptime since last full charge and my batter is at 74% percent left.
I can't tell you how glad i am i stumbled into this topic. I was just ready to uninstall all my apps and possibly get the phone in service.
I find this a somewhat important problem of the cellphone and i think more users should be informed about this. Could be a nice addition to some faq/tips and tricks topics.
I still have a couple of questions though and i hope someone will be nice enough to answer them.
What could be the cause of this problem? The android os(upgraded official 2.3.3 from stock 2.2.*), the phone's hardware or the sdcard?
What is there to do if I, let's say, go on a trip and i need some music to listen to on my phone?
Thank you.
i highly recommend to FREEZE it using titanium backup pro..
den unfreeze it if your gonig to use it
Afaik Titanium Backup is for rooted phones. Mine is not, as i said i'm using official 2.3.3. I don't know if i'm gonna root it atm just for using titanium backup.
I still hope there is another workaround that doesn't involve rooting the phone.
BobbyLoblaw said:
Afaik Titanium Backup is for rooted phones. Mine is not, as i said i'm using official 2.3.3. I don't know if i'm gonna root it atm just for using titanium backup.
I still hope there is another workaround that doesn't involve rooting the phone.
Click to expand...
Click to collapse
well then.. root it ^__^
Hi guys,
So for the past week or so, I've been noticing really bad battery drain on my GS2, and I think I have finally pinpointed the problem.
"BetterBatteryStats" has told me that there are 2 specific wakelocks running in the background, which prevent the phone from going to 'deep-sleep'. These are the "suspend" and "events/0" processes. They are on for hours, preventing the phone from going into a proper 'deep-sleep', and keeping it awake.
My question is, how would I stop these processes from running? I know for a fact that it is not such a common 'bug', because tons of people are getting >18 hours on their GS2 with moderate/heavy use, while I'm only getting about 10 with light/moderate usage.
So in short, why are the "suspend" and "events/0" processes running while the phone is supposed to be in sleep mode, and how do I stop them from running and draining battery?
Thanks everyone!
Well I don't have that problem so can't say. You should ask it on the BBS dedicated thread,
http://forum.xda-developers.com/showthread.php?t=1179809
Regards.
This is the famous "Android OS" bug, which happens only on SGS2. Search the forum and you'll see quite a few threads about it. There is no solution, but keeping wifi off when not in use or setting is to sleep when screen is off helps quite a bit.
aydc said:
This is the famous "Android OS" bug, which happens only on SGS2. Search the forum and you'll see quite a few threads about it. There is no solution, but keeping wifi off when not in use or setting is to sleep when screen is off helps quite a bit.
Click to expand...
Click to collapse
It's not only a bug on SGS2. I've been fighting this problem for quite a while on my Nook Color with CM7. Here's the thread I started.
hmm, I am having this problem as well, I'm used to my iphone, where i can use it all day and still remain above 50% meanwhile every time i pop the screen on my GS2 the percentage is down from last time. its horrible, very much considering going back, I love this phone, but this battery draining situation is out of control for me.. midnight -8:30 i lost 45 percent battery.. screen off..
penskyc said:
hmm, I am having this problem as well, I'm used to my iphone, where i can use it all day and still remain above 50% meanwhile every time i pop the screen on my GS2 the percentage is down from last time. its horrible, very much considering going back, I love this phone, but this battery draining situation is out of control for me.. midnight -8:30 i lost 45 percent battery.. screen off..
Click to expand...
Click to collapse
you might want to have a bit of a read. You never know, might find something
skimminstones said:
you might want to have a bit of a read. You never know, might find something
Click to expand...
Click to collapse
been reading all day and night most stuff lead to a dead end, currently looking at this:
http://code.google.com/p/android/is...c=ID Type Status Owner Summary Stars&id=16721
turning off google sync and stuff is not an option for me, I need push email, and contacts and google reader, whats a smart phone if i need to dumb it down
http://forum.xda-developers.com/showthread.php?t=1290020
skimminstones said:
http://forum.xda-developers.com/showthread.php?t=1290020
Click to expand...
Click to collapse
so basically there is no solution...
penskyc said:
so basically there is no solution...
Click to expand...
Click to collapse
well for me, installing the siyah 1.8 kernel has sorted it and my battery life is pretty damn good now.
Others will tell you its not fixed and the extra battery life im getting is a placebo. But all i know is i used to get 3 hours screen on time and lose 15-20% battery overnight. Now i lose 2% overnight and get 5-6 hours screen on time. If thats placebo then so be it.
skimminstones said:
well for me, installing the siyah 1.8 kernel has sorted it and my battery life is pretty damn good now.
Others will tell you its not fixed and the extra battery life im getting is a placebo. But all i know is i used to get 3 hours screen on time and lose 15-20% battery overnight. Now i lose 2% overnight and get 5-6 hours screen on time. If thats placebo then so be it.
Click to expand...
Click to collapse
hmm, ok, I will look into kernels, I am using an AT&T SGS2 so its a little different kernel wise. I have yet to find anything in my specific forums though.. just switched from an eperimental kernel to a stable, so maybe this will help
I think I just read somewhere in the Galaxy S2 forum that AOS isn't exactly solved on the .14 kernel (which siyah 1.8 is based on)..... it just merely not include suspend and events/0 into the Android OS count for the battery.....
Anyone can shed some light on this?
---------- Post added at 10:28 PM ---------- Previous post was at 10:23 PM ----------
ok, found it
http://forum.xda-developers.com/showthread.php?t=1290020
hope this would be useful
penskyc said:
hmm, ok, I will look into kernels, I am using an AT&T SGS2 so its a little different kernel wise. I have yet to find anything in my specific forums though.. just switched from an eperimental kernel to a stable, so maybe this will help
Click to expand...
Click to collapse
then yea, dont be installing any roms/kernals form this forum. You have a different phone.
skimminstones said:
then yea, dont be installing any roms/kernals form this forum. You have a different phone.
Click to expand...
Click to collapse
yup! I know, just figured since the phone was around longer it would have some more information on the suspend and events/0, which it did, thanks for your help!
skimminstones said:
well for me, installing the siyah 1.8 kernel has sorted it and my battery life is pretty damn good now.
Click to expand...
Click to collapse
is siyah 1.8 better for battery life compared to siyah 2.1 or the newer one?
I tried 2.1, but I still have high android OS.
Using bbs, I see that suspend and events/0 is still around 1 to 3 minutes each day.
I have turned off:
Accounts and sync > background data & auto-sync,
Privacy > back up my data,
Location and sec > use wireless networks.
Any other advice?
a1adin said:
is siyah 1.8 better for battery life compared to siyah 2.1 or the newer one?
I tried 2.1, but I still have high android OS.
Using bbs, I see that suspend and events/0 is still around 1 to 3 minutes each day.
I have turned off:
Accounts and sync > background data & auto-sync,
Privacy > back up my data,
Location and sec > use wireless networks.
Any other advice?
Click to expand...
Click to collapse
Use a 2.3.4/2.3.5 based ROM such as CheckROM HD or Hyperdroid-Androidmeda with Darknight-Siyah Kernel.
I get 3 days of use if i keep data off . With Data on and normal usage i get on average 0.7-1% drop per hour compared to 3-4% of 2.3.3 ROM.I think it's a combination of kernel and ROM that solves the problem.
Earlier CPU Spy used to show lots of time spent at 800Mhz which is what android OS bug does. Now i see it spending 1-2% time in 800Mhz and most of time in deep sleep.
thanks for the reply.
now I am using CRv3.1.1 with speedmod 18test3.
but it seems that from day to day, events/0 & suspend are getting bigger and bigger.
do you know why?
I upgraded to KI3 a long time ago, and froze the hubs + wifi sharing / wifi sharing manager (i never even used the hubs anyways), and what do you know; my battery can now easily last me a LONG time, after 16 hours it still always has AT LEAST 40% remaining, and that is with a few hours screen-on time, data sometimes on, wifi usually always on! I'm extremely happy now!
So in short, for those of you with bad battery life, the least you could do is upgrade to XXKI3 or XXKI4 (they're pretty much the same thing) firmware/kernel. Even completely stock without root/frozen apps is A LOT better than any other 2.3.4 / 2.3.3 ROMs.
CRv3.1.1 is already based on xxkj3, and I have already frozen most of samsung bloatware.
However, I have just found out that kernel is an important factor in high suspends and events/0.
Now I use the previous version: speedmod 17 test 1, and suspends & events/0 decrease a lot.
Ok, I installed 2.3.6 from AT&T and my bettery life has tanked.
Batter Usage shows the Android OS at 93%!!!
Not using my phone, it is dead in about 7 hours.
Kernel Version
2.6.35.7
Build Number
GINGERBREAD.UCKK6
I am not rooted and dont want to root.
HELP!
Tymong said:
Ok, I installed 2.3.6 from AT&T and my bettery life has tanked.
Batter Usage shows the Android OS at 93%!!!
Not using my phone, it is dead in about 7 hours.
Kernel Version
2.6.35.7
Build Number
GINGERBREAD.UCKK6
I am not rooted and dont want to root.
HELP!
Click to expand...
Click to collapse
You have an app that is driving data to your phone, causing the wifi chip to wake the phone all the time. Apparently a system app - a lot of people have been having this issue with KK6.
Beyond this - sorry, but if you are not rooted you will have to live with it. Identifying what is triggering the wifi interrupts requires obtaining a Wireshark capture, this is not possible without root. Even if a common root cause is found for what's going on with KK6, it's most likely in /system itself so can't be fixed without a custom ROM or at least rooting.
If you're not willing to root, why are you on a firmware developer forum? Have AT&T help you instead if you're on 100% bone stock unrooted.
Well if it's an APP causing it, then many many people must be running the same app cause all of the various forums out there are a lot of people with the battery drain after updating to 2.3.6. Even a lot of my customers have mentioned it also.
I doubt it is an APP doing it. I'd bet it is just some bad coding on Samsung's part. They are probably getting a lot of complaints and are most likely already looking into it.
As far as the why he is here if he doesn't root. Well I don't root as well and have no desire to being as stock works just great. (other than the battery drain)
This is a great place to hang out and keep up on other people using various phones. He posted in the General section, not the Developer's section for this phone. So I think his/her question was valid.
If he was asking the question in the Developers section I would understand your concern. But I don't feel you have to be into cooked ROMS to value this forum.
That's like saying to the people who like the "Fast and the Furious" moves to stop watching them because they have a Chevy and not a pimped up Civic.
Tymong said:
Ok, I installed 2.3.6 from AT&T and my bettery life has tanked.
Batter Usage shows the Android OS at 93%!!!
Not using my phone, it is dead in about 7 hours.
Kernel Version
2.6.35.7
Build Number
GINGERBREAD.UCKK6
I am not rooted and dont want to root.
HELP!
Click to expand...
Click to collapse
I'm not rooted with wifi on all the time just got the phone 3 days ago and I'm getting 14-15hrs with no issue down to about 15-20% battery life left before I have to stick back on charger. Could be a bad battery or device, I'm coming over from Sprint after using rooted evo3d and rooted photon.
Sent from my SAMSUNG-SGH-I777 using xda premium
The forum is called xda-DEVELOPERS.com
If you don't want to root, you're probably better off in the AT&T support forums, because honestly, it isn't worth our time to try and help someone who doesn't want to root fix a problem that is almost sure to require root access to fix, or in this case, even diagnose.
I do believe many are having this issue after upgrading to kk6 (with same apps installed). I had the issue as well.
May be a system app, or something in /system causing an app to become unhappy.
Either way, it's not going to get fixed without Shark for Root captures from those encountering problems.
Sent from my GT-P7510 using Tapatalk
browncarpet said:
I do believe many are having this issue after upgrading to kk6 (with same apps installed). I had the issue as well.
Click to expand...
Click to collapse
I don't think it anything to do with KK6. As Entropy said its an app causing a wake lock. I'm run Ingram KK6 without any issues with battery.
Sent from my sgh-i777 using xda premium
Having this issue as well. Phone is stock. Ive been here since the captivate but I hang around with the sgs2. Never needed to root this phone as it works perfectly for me. But I did the update this morning at 100% charge and 9 hours later with no use it's down to 9%. I could go all day with moderate use and be at 30-40% by the time I go to bed.
I read on a rather long on a google forum that many had this issue after upgrading via ota but who knows. I found that wiping dalvik and flashing unnamed update again I have much better batter life. I did read in update that he reverted to an earlier kernel signature to fix the battery drain.
Im going back to 2.3.4 via this method.
http://galaxys2root.com/att-galaxy-s2/how-to-unroot-att-galaxy-s2-sgh-i777/
Losing 10% of my battery at idle /hour is ridiculous lol. Android os was at 87+% within 3 hours of restart.
Edit:
Okay so I did this method. Took about 5 mins after I got everything downloaded. I did not do the factory reset since it's not needed. Phones back to 2.3.4 and nothing was reset. Have all my sms's contacts, aps, wallpapers etc. Battery seems to be back to normal.
I recommend everyone who did that 2.3.6 update to revert back. To many problems with it.
I never entered download mode on this phone before. Just a tip: Keep holding all the buttons till the phone seems like it shuts off and keep holding them till you get into download mode. Do not let go or else it just powers off.
For the purposes of attempting to fix the problem, I really would like some people to take some Shark for Root captures as described in my Known Battery Drainers thread.
With that data, the root cause of the problem might be identifiable.
So far I've only seen one capture, I really need more unless I can reproduce the problem myself.
Entropy512 said:
For the purposes of attempting to fix the problem, I really would like some people to take some Shark for Root captures as described in my Known Battery Drainers thread.
With that data, the root cause of the problem might be identifiable.
So far I've only seen one capture, I really need more unless I can reproduce the problem myself.
Click to expand...
Click to collapse
I'm also having battery issues but would like to try to fix it before giving up.
I've searched a bunch but can't find that thread. Not at home to try it on my PC so if you'll link it here, I'll do what I can to get some captures for you.
Sent from my SAMSUNG-SGH-I777 using Tapatalk
[REF] Known identified battery drainers
n7slc said:
I've searched a bunch but can't find that thread. Not at home to try it on my PC so if you'll link it here, I'll do what I can to get some captures for you.
Click to expand...
Click to collapse
[REF] Known identified battery drainers
I read a possible solution on another forum and tried it with my SGS2 today and am amazed at the difference today in my battery life.
Worth a shot as it does not require anything more than charging your phone and pulling the battery.
Charge your phone to 100% with the phone off (hold the power button for 3 seconds or so until the menu comes up and select power off). When you reach 100%, unplug the charger and remove your battery (some said keep the battery removed for 90 seconds while others said 3-5 minutes). I left my battery out for 5 minutes or so. Put the battery back in and power on.
That was it. My Android OS went back to normal and the battery life today has been great if not better then with 2.3.6 than before I updated.
Screen grab of my current battery use after trying this method this morning is attached.
radeon962 said:
I read a possible solution on another forum and tried it with my SGS2 today and am amazed at the difference today in my battery life.
Worth a shot as it does not require anything more than charging your phone and pulling the battery.
Charge your phone to 100% with the phone off (hold the power button for 3 seconds or so until the menu comes up and select power off). When you reach 100%, unplug the charger and remove your battery (some said keep the battery removed for 90 seconds while others said 3-5 minutes). I left my battery out for 5 minutes or so. Put the battery back in and power on.
That was it. My Android OS went back to normal and the battery life today has been great if not better then with 2.3.6 than before I updated.
Screen grab of my current battery use after trying this method this morning is attached.
Click to expand...
Click to collapse
Placebo effect - did nothing a plain old reboot would not have done.
Entropy512 said:
Placebo effect - did nothing a plain old reboot would not have done.
Click to expand...
Click to collapse
Quite possible, but still running on the same charge from this morning and am at 28% battery after 14+ hours of normal use which is all I expect (calls, texts and light web browsing during the day over data) and then couple hours of web use at night over Wi-Fi when at home.
The last few days I was charging the phone when I got home from the office if I wanted to use it at night. Android OS was way up in the 60+ range after I first updated OTA and today it has been under 20% and more near 15%, so I'll take it.
---------- Post added at 11:09 PM ---------- Previous post was at 10:59 PM ----------
Come to think, I probably did not do a reboot after the update and could have been all that was needed.
radeon962 said:
I read a possible solution on another forum and tried it with my SGS2 today and am amazed at the difference today in my battery life.
Worth a shot as it does not require anything more than charging your phone and pulling the battery.
Charge your phone to 100% with the phone off (hold the power button for 3 seconds or so until the menu comes up and select power off). When you reach 100%, unplug the charger and remove your battery (some said keep the battery removed for 90 seconds while others said 3-5 minutes). I left my battery out for 5 minutes or so. Put the battery back in and power on.
That was it. My Android OS went back to normal and the battery life today has been great if not better then with 2.3.6 than before I updated.
Screen grab of my current battery use after trying this method this morning is attached.
Click to expand...
Click to collapse
I did this and saw absolutely no change. 2.3.6 is draining my battery far faster than 2.3.4 ever did. The culprit is the Android OS running at 90%.
I read that it might be an issue with the wifi so I have turned that off and will report back if that seems to fix it.
I read on another forum that att and Samsung are trying to blame it on bad batteries and shipping out new batteries.
What a bunch of crap. People everywhere wouldn't suddenly all have bad batteries at the same time. Sounds like usual BS.
I personally think its just some bad coding that Samsung needs to figure out.
On a different note, I played with the Verizon Droid Razr yesterday. Man that is a really nice phone. I'm tempted to get it, but I work for att and get free cell service, so it wouldn't make sense to pay for Verizon service, even though I think their network is better.
Sent from my SAMSUNG-SGH-I777 using XDA App
chocodough said:
I read on another forum that att and Samsung are trying to blame it on bad batteries and shipping out new batteries.
What a bunch of crap. People everywhere wouldn't suddenly all have bad batteries at the same time. Sounds like usual BS.
I personally think its just some bad coding that Samsung needs to figure out.
On a different note, I played with the Verizon Droid Razr yesterday. Man that is a really nice phone. I'm tempted to get it, but I work for att and get free cell service, so it wouldn't make sense to pay for Verizon service, even though I think their network is better.
Sent from my SAMSUNG-SGH-I777 using XDA App
Click to expand...
Click to collapse
Android OS is definately eating up the battery now. I think it does have to do with wifi, because it seems to be much improved with it off. I'll take a free battery as long as I don't need to exchange the old one.
After upgrading to ICS (via kies) the battery really sucks. Last for a whole day if im lucky. Is this normal??
arovik said:
After upgrading to ICS (via kies) the battery really sucks. Last for a whole day if im lucky. Is this normal??
Click to expand...
Click to collapse
From what I've heard, it's usually improved - BUT some power management bugs that affected stock Gingerbread kernels but were fixed in all custom kernels are still present in ICS, such as the good old fuel_alerted wakelock - so while it's better when working well, it's more prone to breaking.
I'm happy if my battery lasts for a day as i'm always messing with it(one of these days I might use it to make a phone call)! Have you tried putting it on charge at bedtime? I find that helps a lot.
mr_tris said:
Have you tried putting it on charge at bedtime? I find that helps a lot.
Click to expand...
Click to collapse
I would try to avoid over-charging it, it's not good for any battery. Once it hits 100% (so long as it's correctly calibrated) unplug and use as normal.
Sent from my GT-I9100 using XDA
same here i upgraded to ICS xxlpq and have been using it for 3 days, im struggling to get a day out of it ... its exactly the same setup as when i ran XEU (KI4) 2.3.4 unbranded UK. I noticed ram usage has increased as well as the amount of system processes. both times I rooted and removed bloatware. when my contract runs out in 6 months I will be looking at either a pure asop phone or an iphone 5, The galaxy s2 has a great screen but the batterylife if weak no matter what custom rom and custom kernal is running. Also I can get a wifi signal in my bedroom with my laptop and my old iphone 3gs but nothing with the s2.
Also please can anyone advise what the best pure and minimilistic asop rom will be for the galaxy s2 ive read cm9 mite be soon but is there anything thats great for battery life ? ...... thanks for you time in advance :=)
aRc. said:
I would try to avoid over-charging it, it's not good for any battery. Once it hits 100% (so long as it's correctly calibrated) unplug and use as normal.
Click to expand...
Click to collapse
No wonder my batterys crap then!!! (And is a 2000 maH version)
lstreet said:
same here i upgraded to ICS xxlpq and have been using it for 3 days, im struggling to get a day out of it ... its exactly the same setup as when i ran XEU (KI4) 2.3.4 unbranded UK. I noticed ram usage has increased as well as the amount of system processes. both times I rooted and removed bloatware. when my contract runs out in 6 months I will be looking at either a pure asop phone or an iphone 5, The galaxy s2 has a great screen but the batterylife if weak no matter what custom rom and custom kernal is running. Also I can get a wifi signal in my bedroom with my laptop and my old iphone 3gs but nothing with the s2.
Also please can anyone advise what the best pure and minimilistic asop rom will be for the galaxy s2 ive read cm9 mite be soon but is there anything thats great for battery life ? ...... thanks for you time in advance :=)
Click to expand...
Click to collapse
Had same problem. Was exchange that was culprit.the exchange client on Samsung based ROM have a ton of wake locks.
Sent from my GT-I9100 using Tapatalk
Canadoc said:
Had same problem. Was exchange that was culprit.the exchange client on Samsung based ROM have a ton of wake locks.
Sent from my GT-I9100 using Tapatalk
Click to expand...
Click to collapse
did u manage to fix the problem is "exchange something that can be removed ?
Upgrading to custom ICS roms is usually a great way to enhance your battery life, because they're always containing tweaks and optimizations!
This worked for me
Device: GT-I9100 (Samsung Galaxy S2 international)
Carrier: Smartone
Country / Language: Hong Kong
OS / Browser / build number (if applicable): ICS 4.0.3/IML74K.ZSLPE
I can confirm that I have resolved the battery drain issue after upgrading to ICS on my device. The problem was partial wake locks caused by the exchange service.
One of these measures fixed the problem for me (it might have been any of these, although I have a strong suspicion that the factory reset is the only relevant one):
- factory reset of phone; didn't restore the settings and accounts, but set them up manually
- wiped cache
- did not reinstall ADW launcher
Hope that helps.
The good news is that now the battery life is definitely better than it was on Gingerbread.
Tobes
aRc. said:
I would try to avoid over-charging it, it's not good for any battery. Once it hits 100% (so long as it's correctly calibrated) unplug and use as normal.
Sent from my GT-I9100 using XDA
Click to expand...
Click to collapse
This isn't really true. Once it hits 100% it pretty much runs off the charger.
By depleting it all the time you are ruining the battery that way
aRc. said:
I would try to avoid over-charging it, it's not good for any battery. Once it hits 100% (so long as it's correctly calibrated) unplug and use as normal.
Sent from my GT-I9100 using XDA
Click to expand...
Click to collapse
Leaving your phone on charge longer than is absolutely necessary ie taking it off charge as soon as it gets to 100% will not affect your battery life and there is also no need to manually calibrate the battery. I installed DXLP7 and was getting poor battery life due to a wakelock, I found and dealt with the cause and immediately battery life improved. In my experience battery life on ICS is as good as it was in gingerbread. Better battery stats is your friend.
Sent from my GT-I9100 using Tapatalk
I had upgraded my sgs2 to ics yesterday. The new version is draining the battery very seriously. In the previous version, my sgs2 could last for about 12 hours from a fully charged state. But now the version can only last for 6 hours, which is really unacceptable.
Is deep sleep? You can check with CPU-Spy. If not, remove the battery a few minutes and then returned.
loftysnake said:
I had upgraded my sgs2 to ics yesterday. The new version is draining the battery very seriously. In the previous version, my sgs2 could last for about 12 hours from a fully charged state. But now the version can only last for 6 hours, which is really unacceptable.
Click to expand...
Click to collapse
But you have not given the battery time to recalibrate itself .
jje
I had huge battery drain issues from exchange and email waking the device and constantly doing something. Removed the accounts and then set them up again. Like night and day now, better than gb. On LP7 and never wiped.
Cheers
Sent from my GT-I9100 using Tapatalk
Keep a look with BetterBatteryStats, and see if there are any apps messing up.
I have better batterylife with ICS by a margin.
And about leaving the charger on during night, these are kind of myths really, you can keep it on without any worries, and also charge it without being totally drained.
Most of these thoughts come from the old Ni-Cd times with memory effect.
I had removed the Exchange Account yesterday and the battery drain problem disappeared. The account was added back after about 10 hours. The battery usage is now back to normal (a little bit better than the situation before the ics upgarde). Thanks for your hint.
Cheers.
SG S2 ICS Battery drain issue
Had upgraded to ICS when it launched in India and literally went berserk due to the battery drain issue. Googled and googled, found a lot of things, tried most of them (except for changing ROMs).
Then, Voila, last 4 days - a complete twist to my sorry tale. I first disabled the phone backup option (to Google), did a factory reset, said No to most of the options that are asked on restart, and didnt install the earlier applications from the Play store en masse (earlier, had a number of games and other 'what I thought was useful' apps). Now, only have the basic apps plus Poweramp, Shazam and NQ Mobile added. And the result - the battery is back to normal. Phew....big relief as I use the phone pretty much for mails, music, phone.
I want yo add some thing very annoying, I discovered today after upgrading to Resurrection ROM.
In fact, even with the device connected to my car power supply and using Copilot for about 1 hour, the battery continued it's discharge instead of charging.
So what to say and what to do?
Cheers
4) and it's very very annoying... so much so that I sometimes (multiple times in a day, actually) wish to get back to Android 2.3.3, which I had before updating to Samsung's (India) version of Android 4.1.2 for my GS2.
What could be the problem? I rarely ever connect to WiFi (am always connected to GPRS/EDGE, but that has never been a problem in the last 2 years... the phone still used to get nearly a day of battery life) and the brightness is almost always at the lowest. I rarely use Bluetooth, GPS, etc. I don't even use Facebook and WhatsApp anymore, so the screen isn't used to the max. I've turned off all the Location Sharing settings for Google Maps and/or other apps (I use very few apps anyway, but have a bunch of them installed on the phone... none that execute in the background though | also not more than a couple new apps after my OS upgrade).
It's been nearly a week since upgrading the OS on my phone. Last night when I hit the bed at 1.15AM my time, the battery was at 100% (after charging). With no activity whatsoever in the night, the charge had dropped to 88% by 9.35AM. That's less than 8.5 hours of no use and 12% charge gone. That never was the case earlier.
Also, for each minute of using the phone with the screen on, I notice 1-1.5% drop in the battery. That is, to put it very very mildly, PATHETIC!!!
I don't know what to do. Would a "clean rom" install help? If so, what exactly is a "clean rom" install?
Or should I be doing something else?
Any help would be greatly appreciated.
P.S.: Please let me know if any other info is needed too. BIG BIG Thanks in advance to anyone reading this
5) Read about jb settings/issues.
Sent from the little guy
Hi OP,
I haven't been on the i9100 for that long, but have also been annoyed with short battery life. As have many others from what I read. A 12% drop over about 8 hours of sleep, I'm sorry to say, doesn't seem that bad actually for an SGS2 with stock jb 4.1.2 and stock battery.
Personally, I tried different lightweight ROMs that are known to spare your battery. The advice to turn off 3g and other core functions never made sense to me, as I want an operable phone, not some sort of deflated piece of junk.
After reading on xda I went through Slimbean , Liquidsmooth, and other ROMs to see if they would increase battery life.
My current ROM is NeatROM 4.8, which actually seemed to give better results. Please note that this is purely subjective, though, I have no fancy battery analyses to back up my statement.
What REALLY helped was getting a replacement battery.
I tried Qcell 1950 mAh batteries. Stay away from those. They are clearly not 1950 mAh. Now running with a genuine Samsung 2000 mAh which is worth every dime.
Now I imagine you would be frustrated having to buy a new battery just because you updated your firmware and I do understand. I never owned the SGS2 before jb, so my choice was simple I guess. That having been said, though, the 2000 mAh battery really turned the phone into a whole new sort of usable. It easily lasts through the day even with regular use.
Just my 2 cents.
Sent from my GT-I9100 using xda app-developers app
S2 battery life
jsiv said:
Hi OP,
I haven't been on the i9100 for that long, but have also been annoyed with short battery life. As have many others from what I read. A 12% drop over about 8 hours of sleep, I'm sorry to say, doesn't seem that bad actually for an SGS2 with stock jb 4.1.2 and stock battery.
Personally, I tried different lightweight ROMs that are known to spare your battery. The advice to turn off 3g and other core functions never made sense to me, as I want an operable phone, not some sort of deflated piece of junk.
After reading on xda I went through Slimbean , Liquidsmooth, and other ROMs to see if they would increase battery life.
My current ROM is NeatROM 4.8, which actually seemed to give better results. Please note that this is purely subjective, though, I have no fancy battery analyses to back up my statement.
What REALLY helped was getting a replacement battery.
I tried Qcell 1950 mAh batteries. Stay away from those. They are clearly not 1950 mAh. Now running with a genuine Samsung 2000 mAh which is worth every dime.
Now I imagine you would be frustrated having to buy a new battery just because you updated your firmware and I do understand. I never owned the SGS2 before jb, so my choice was simple I guess. That having been said, though, the 2000 mAh battery really turned the phone into a whole new sort of usable. It easily lasts through the day even with regular use.
Just my 2 cents.
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
yea.. u said it...even i have tried several custom roms ( NeatRom, WanamLite,RR etc) all give 15-19 Hrs max.. and this also by tweaking all the settings..
S2 is a undoubted beast, but the cost in terms of battery is very hight..my previous Android Motorola Defy was a Mammoth in itself..huge custom fanbase and loads of ROMS + Awsome battery.
Any ways i got no regretts for having a S2..but battery s a lil concern..
Currently am on Asnet MIUI V5 and its going good..fast, responsive, smooth and decent battery of 18 hours avg..
@jsiv - i wanted to ask u a question.. which country u hail from ?? because the stock 2000 mah battery is not available in India, my region.
Cheers:angel:
Do you calibrate battery after every ROM change?
Sent from my Nexus 4 using xda premium
gastonw said:
5) Read about jb settings/issues.
Sent from the little guy
Click to expand...
Click to collapse
Can you please point me in the "settings" direction? I think I'm doing all things right, going real low on app usage, sync-ing of apps, screen settings, etc.
vish91 said:
Do you calibrate battery after every ROM change?
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
What exactly is battery calibration here? Please pardon my ignorance. I did a full charge when my phone hit got switched off the day after upgrading the OS. Is there something else I must be doing here?
I've had this problem right after the upgrade. So, I don't think it's an issue with my battery per se. It could just be JB.
How good is the Cynaogen Mod ROM in terms of battery life?
Or would it be wiser to switch to Android 4.0/ ICS?
I live in Denmark. I ordered it off Ebay, but I see now that the UK shop I got it from doesn't ship to India.
You searched Ebay for "Samsung genuine 2000 mAh battery" or similar?
Sent from my GT-I9100 using xda app-developers app
theultimate1 said:
Can you please point me in the "settings" direction? I think I'm doing all things right, going real low on app usage, sync-ing of apps, screen settings, etc.
What exactly is battery calibration here? Please pardon my ignorance. I did a full charge when my phone hit got switched off the day after upgrading the OS. Is there something else I must be doing here?
I've had this problem right after the upgrade. So, I don't think it's an issue with my battery per se. It could just be JB.
How good is the Cynaogen Mod ROM in terms of battery life?
Or would it be wiser to switch to Android 4.0/ ICS?
Click to expand...
Click to collapse
Cyanogenmod roms are very fast ROM they are good as hell
Ur problem is genuine go to the playstore and download battery calibration app and follow the instructions in the app charge or battery up to 100 % and caliberate the battery u should have made an nandroid backup before upgrading
Sent from my Galaxy Nexus using xda premium
theultimate1 said:
Can you please point me in the "settings" direction? I think I'm doing all things right, going real low on app usage, sync-ing of apps, screen settings, etc.
What exactly is battery calibration here? Please pardon my ignorance. I did a full charge when my phone hit got switched off the day after upgrading the OS. Is there something else I must be doing here?
I've had this problem right after the upgrade. So, I don't think it's an issue with my battery per se. It could just be JB.
How good is the Cynaogen Mod ROM in terms of battery life?
Or would it be wiser to switch to Android 4.0/ ICS?
Click to expand...
Click to collapse
Battery calibration: http://forum.xda-developers.com/showthread.php?t=1312273
This has to be done every time you do a ROM upgrade or change ROMs.
CM has excellent battery life when compared to other ROMs.
If you are switching over to ICS stay away from version 4.0.4 as it has EMMC brick bug.Any other version would be fine.
theultimate1 said:
4) and it's very very annoying... so much so that I sometimes (multiple times in a day, actually) wish to get back to Android 2.3.3, which I had before updating to Samsung's (India) version of Android 4.1.2 for my GS2.
What could be the problem? I rarely ever connect to WiFi (am always connected to GPRS/EDGE, but that has never been a problem in the last 2 years... the phone still used to get nearly a day of battery life) and the brightness is almost always at the lowest. I rarely use Bluetooth, GPS, etc. I don't even use Facebook and WhatsApp anymore, so the screen isn't used to the max. I've turned off all the Location Sharing settings for Google Maps and/or other apps (I use very few apps anyway, but have a bunch of them installed on the phone... none that execute in the background though | also not more than a couple new apps after my OS upgrade).
It's been nearly a week since upgrading the OS on my phone. Last night when I hit the bed at 1.15AM my time, the battery was at 100% (after charging). With no activity whatsoever in the night, the charge had dropped to 88% by 9.35AM. That's less than 8.5 hours of no use and 12% charge gone. That never was the case earlier.
Also, for each minute of using the phone with the screen on, I notice 1-1.5% drop in the battery. That is, to put it very very mildly, PATHETIC!!!
I don't know what to do. Would a "clean rom" install help? If so, what exactly is a "clean rom" install?
Or should I be doing something else?
Any help would be greatly appreciated.
P.S.: Please let me know if any other info is needed too. BIG BIG Thanks in advance to anyone reading this
Click to expand...
Click to collapse
As reported before, it seems that many official JB ROMS are not as optimized as other national versions and are battery hungry. It was suggested to upgrade to the French release (XEF).
vish91 said:
Battery calibration: http://forum.xda-developers.com/showthread.php?t=1312273
This has to be done every time you do a ROM upgrade or change ROMs.
CM has excellent battery life when compared to other ROMs.
If you are switching over to ICS stay away from version 4.0.4 as it has EMMC brick bug.Any other version would be fine.
Click to expand...
Click to collapse
I did this... and unfortunately, it did nothing in my case.
I went to the CM site, but I didn't find any stable build for SGS2. Is there a thread on this site I can refer to for the same?
Also, what's the best way to go about installing a different ROM? I have so many apps, sms messages, pics, mp3 files, 3gp files, etc. Sure I can take a back-up onto my SD card. But won't I lose all the apps once I flash the current Android installation and install a new ROM? Any article or video on YouTube that addresses these points? Please point me in the right direction. I practically don't use my phone even half as much as before and I'm having to charge it twice a day, as against once a day earlier.
Also, the rapid battery loss seems to be causing the phone to heat up a lot if I'm on a call longer than 15 minutes or having the screen on for 2-3 minutes straight.
theultimate1 said:
I did this... and unfortunately, it did nothing in my case.
I went to the CM site, but I didn't find any stable build for SGS2. Is there a thread on this site I can refer to for the same?
Also, what's the best way to go about installing a different ROM? I have so many apps, sms messages, pics, mp3 files, 3gp files, etc. Sure I can take a back-up onto my SD card. But won't I lose all the apps once I flash the current Android installation and install a new ROM? Any article or video on YouTube that addresses these points? Please point me in the right direction. I practically don't use my phone even half as much as before and I'm having to charge it twice a day, as against once a day earlier.
Also, the rapid battery loss seems to be causing the phone to heat up a lot if I'm on a call longer than 15 minutes or having the screen on for 2-3 minutes straight.
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There is no stable version of CM 10 on I9100 because of the some issues. You can flash one of the nightly builds.They might not be necessarily unstable.
No you wont be losing everything when you install a new ROM.You lose once you do a data wipe.It is suggested you wipe everything before you install a new ROM.
With a data wipe you'll lose the following - SMS,contacts,call logs,apps installed and respective data.
What you wont lose - Anything stored in the sdcard partition - Pictures, Videos, Music, Apk files and Anything stored on the Ext SD card.(unless you format them specifically)
Best solution is to use titanium backup app(You need root). This way you can backup your apps and resp. data,wipe data-install ROM,and restore the previous backup on the new ROM.
Tutorial : http://forum.xda-developers.com/showthread.php?t=1972455
As far as the battery issue is concerned,do a clean ROM install through Odin.
Index of guides : http://forum.xda-developers.com/showthread.php?t=1826497