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Horrible battery life after 2.3.6

Tymong

New member
Dec 24, 2011
1
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0
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!
 

Entropy512

Senior Recognized Developer
Aug 31, 2007
14,095
25,085
0
Owego, NY
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!
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.
 

chocodough

New member
Aug 28, 2003
427
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0
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. :)
 

envioustitan08

New member
Jun 1, 2011
169
8
0
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!
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
 

Entropy512

Senior Recognized Developer
Aug 31, 2007
14,095
25,085
0
Owego, NY
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.
 
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Entropy512

Senior Recognized Developer
Aug 31, 2007
14,095
25,085
0
Owego, NY
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
 

NascarFastcar

New member
Dec 17, 2010
137
5
0
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.
 

browncarpet

New member
Mar 23, 2011
21
2
0
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.
 

NascarFastcar

New member
Dec 17, 2010
137
5
0
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.
 
Last edited:

Entropy512

Senior Recognized Developer
Aug 31, 2007
14,095
25,085
0
Owego, NY
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.
 

n7slc

New member
Jul 21, 2010
321
31
0
Salt Lake City
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.
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
 

radeon962

New member
Dec 15, 2011
252
44
0
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.
 

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Entropy512

Senior Recognized Developer
Aug 31, 2007
14,095
25,085
0
Owego, NY
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.
Placebo effect - did nothing a plain old reboot would not have done.
 

radeon962

New member
Dec 15, 2011
252
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0
Placebo effect - did nothing a plain old reboot would not have done.

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.
 

Demodave

New member
Nov 7, 2011
56
21
0
Las Vegas
demodavepro.com
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.
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.
 

chocodough

New member
Aug 28, 2003
427
40
0
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
 

Patsfan123

New member
May 23, 2010
145
28
0
Quincy, MA
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

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.
 
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