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Old January 30th, 2012, 04:13 PM   #151 (permalink)
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Originally Posted by misterrunon View Post
can't you just use kies to revert back to 2.3.4?
That is my understanding... but first I have to figure out how to find what's on my OS... it's all greek right now, this thing charges oh so damn slow... 3 hours and I might be at 70% charged. WTF? Turn on Wifi, and i'm wondering if it will even charge and get some gain in the battery? I know Li Ions are slow to charge at the end, but dang... this thing is anemic at first, totally the opposite of my Blackberry Curve 8310. Charged fully most times in 1 to 1.5 hours, and I'd get 4 days of use out of it, phone only, no text mssgs or data usage.

Bluetooth can't even find my Jabra, when turned on to pair up... strange, I'm probably doing something wrong.
Edit: well duh!, I forgot how to put Jabra II into pair mode, got er done with directions on Google.

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Old January 30th, 2012, 07:14 PM   #152 (permalink)
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menu --> settings --> about phone

it takes a while to charge, but that's not samsung's fault. it's a hardware thing. you can just get that hyperion bay if it's a big issue... not as convenient, but it doesn't hurt.
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Old January 31st, 2012, 08:53 AM   #153 (permalink)
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I agree that arp requests are likely the issue, what I have noticed is that when I am connected to wifi at the office on a large network with more than 100 machines my battery life gets trashed, but if I stay home all day connected to my home network with only 10 machines I get excellent battery life with roughly the same or more physical usage.
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Old January 31st, 2012, 10:38 AM   #154 (permalink)
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Quote:
Originally Posted by dwykofka View Post
I agree that arp requests are likely the issue, what I have noticed is that when I am connected to wifi at the office on a large network with more than 100 machines my battery life gets trashed, but if I stay home all day connected to my home network with only 10 machines I get excellent battery life with roughly the same or more physical usage.
Same experience here. Home wifi or church wifi, I have plenty of battery left by evening. At the office, I can't make it through the workday without the battery dying.

An interesting point: I've always had that Android problem where the wifi would usually not work when I'm at the office. At home/church, it works fine. Now the wifi seems to work now at the office, but it kills the battery. I wonder if the wifi sucking down the battery is related to an attempt to fix the android wifi problem.
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Old January 31st, 2012, 11:18 AM   #155 (permalink)
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Maybe I sometimes believe in conspiracy theory, but it wouldn't surprise me at all if ATT designed/engineered this to make users realize if they don't use WiFi, their battery will last a lot longer, but then, the use of the data plan will increase, causing you to spend more money with ATT on a bigger data plan per month?

Hmmm.... that would not surprise me at all if AT&T did that. Carry on, I just need to buy a few more hundred shares of AT&T stock with that 5.8% dividends yield, folks!!! A big spare 3500 mAh battery is a lot cheaper per month than spending it on more data... ya think?
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Old January 31st, 2012, 11:37 AM   #156 (permalink)
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Let's not put on our Tin Foil hats just yet, Samsung has demonstrated that they are skilled in the art of rolling out bad updates so I tend to lean towards that direction.
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Old February 1st, 2012, 03:24 PM   #157 (permalink)
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I don't use voice/data much; just 1-2 calls per day probably lasting 5-10 minutes in total and 15 minutes of email/web per day. Before the update my phone used to last for up to 2 days and now after the update by 5pm daily the phone shows only 10-20% battery life left. Background data disabled. Never use wifi. Battery life and bigger screen were the only major reason I switched from iphone to SII, now I am starting to regret my decision.
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Old February 1st, 2012, 05:27 PM   #158 (permalink)
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Originally Posted by MX21 View Post
Same experience here. Home wifi or church wifi, I have plenty of battery left by evening. At the office, I can't make it through the workday without the battery dying.

An interesting point: I've always had that Android problem where the wifi would usually not work when I'm at the office. At home/church, it works fine. Now the wifi seems to work now at the office, but it kills the battery. I wonder if the wifi sucking down the battery is related to an attempt to fix the android wifi problem.
Interesting update: Friday I went to San Francisco for the day. Turned my wifi off, since I wouldn't have access and wanted my phone to have enough power for the day. Got home late that night and turned wifi back on.

Ever since, I have had my good battery life again. Today it's 3:30 in the afternoon and I still have 84%.

So the solution seems to be to drive down to SF for the day.
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Old February 1st, 2012, 11:10 PM   #159 (permalink)
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So the solution seems to be to drive down to SF for the day.
Don't tell that to Samsung or they'll be recommending it as the "official fix" for 2.3.6.
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Old February 1st, 2012, 11:49 PM   #160 (permalink)
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Or, to turn off wifi for a long time?!
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Old February 2nd, 2012, 09:01 AM   #161 (permalink)
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Yeah, the next upgrade will probably just disable wifi all together, and they'll say "see, we fixed the battery drain, stop complaining". I've taken to leaving wifi off all the time, and just turning it on when I need it.
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Old February 2nd, 2012, 12:16 PM   #162 (permalink)
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Yeah, the next upgrade will probably just disable wifi all together, and they'll say "see, we fixed the battery drain, stop complaining". I've taken to leaving wifi off all the time, and just turning it on when I need it.
That's what AT&T wants you to do, so that you possibly overrun on your data plan and buy another gig or 2 a month at $10 a gig. Revert back to 2.3.4 and don't let them have their way with you.
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Old February 2nd, 2012, 10:27 PM   #163 (permalink)
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What I meant was if all I need is phone and sms, I turn off the wifi. That way i'm not draining my battery 1/3 during a 3 hour drive. If it was hitting my data plan hard, I'd be on my way to the samsung mobile offices in Richardson, TX to kick some ass. I'm still plenty ticked about this issue.
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Old February 6th, 2012, 03:04 PM   #164 (permalink)
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I am sorry to say, but I've given up and sold my GS2 and purchased an unlocked NIB GSM Galxy Nexus running ICS 4.0 and I can now use wifi, without killing my battery in a few short hours!

Good luck and I hope that my GS2 friends get a fix soon from Samsung and AT&T
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Old February 6th, 2012, 03:06 PM   #165 (permalink)
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Looks like we are waiting for ICS (March) guys
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Old February 6th, 2012, 07:26 PM   #166 (permalink)
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It is confirmed for March?
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Old February 6th, 2012, 11:25 PM   #167 (permalink)
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According to: Galaxy S2 ICS release seemingly dated

March is scheduled for release which does line up with their Q1 statement.
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Old February 7th, 2012, 08:56 AM   #168 (permalink)
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I am sorry to say, but I've given up and sold my GS2 and purchased an unlocked NIB GSM Galxy Nexus running ICS 4.0 and I can now use wifi, without killing my battery in a few short hours!

Good luck and I hope that my GS2 friends get a fix soon from Samsung and AT&T
May I ask where you picked up on the Nexus?
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Old February 7th, 2012, 01:02 PM   #169 (permalink)
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For people having trouble with battery life, be sure and upgrade those Zynga apps (words with friends, etc). They had bugs in them that used to make my phone get VERY hot when using it... I don't know what this program was doing but it could drain my entire phone in about an hour. After I upgraded, this program went away.
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Old February 7th, 2012, 01:15 PM   #170 (permalink)
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May I ask where you picked up on the Nexus?
Sent you a PM
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Old February 7th, 2012, 11:43 PM   #171 (permalink)
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I have the similar experience with the battery after I upgrade to 2.3.6 on my Samsung Galaxy T959V. I used to get at least 2 days before the upgrade now it is only lasting less than 12 hours. \\

Anyone know how to roll back to 2.2 Froyo?
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Old February 8th, 2012, 04:03 PM   #172 (permalink)
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Default ATT Microcell has worse/increased power consumption

I've been mucking around with my phone for the past couple of weeks to optimize my battery life, and one thing I've learned in addition (and perhaps separate from) to the 2.3.6 WiFi issues is that connecting to my AT&T Microcell has resulted in worse power consumption on my Samsung Galaxy S2.

I left my phone on overnight with my microcell off, and after 9 hours it had used only 4%. About 2 or 3 bars connection strength.

Then last night I had my microcell on, and confirmed that my phone was connected to it - pulling down the system tray said AT&T Microcell and I had a full 5 bars. But this morning after 9 hours it had used 11% - so more than double.

I had thought that the more bars, the less power your phone had to use to communicate to the tower, and therefore less battery power used. Now this is probably true as a general rule, but apparently this isn't the case with the microcell.

My wife and I both have a SGS2 and I reproduced the behavior on both.

It would be cool if anyone else could confirm this. This is somewhat of a separate topic, so I'll post it in it's own thread as well.
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Old February 12th, 2012, 10:19 PM   #173 (permalink)
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Fortunately, always near some juice. As far as cycling the batt., I've seen conflicting opinions. I find myself partially charging the battery, when quitting time sneaks up on me, my batt. is around 50%, and I attempt a full charge before going out with friends after work, but don't quite reach FULL.
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Old February 17th, 2012, 09:47 AM   #174 (permalink)
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Smile Possible solution

Hi everyone. I may have a solution to your problem. At least it worked on both of my T989 phones I just got a week ago, both running identical versions, both at 2.3.6, and both had the same battery problem... and now they both are fixed.

See my post here:
My samsung galaxy S2 batteries suddenly drain within hours!
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Old February 17th, 2012, 07:46 PM   #175 (permalink)
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I guess ATT pulled the 2.3.6 update. I picked up this thing a couple weeks ago and there is no update available... Not that I care
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Old February 18th, 2012, 10:25 AM   #176 (permalink)
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I guess ATT pulled the 2.3.6 update. I picked up this thing a couple weeks ago and there is no update available... Not that I care
Just tried to push the update on me seconds ago. Getting kind of old avoiding the update, wish they really would pull it.
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Old February 18th, 2012, 11:21 PM   #177 (permalink)
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I think if you clear data in device mgr you won't be bothered with them trying to push it on you
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Old February 19th, 2012, 08:12 AM   #178 (permalink)
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I changed my email check frequency to never and that seems to have helped somewhat. No real verdict yet.

Also, did a full discharge and full charge which also seems to have had an effect.

Looking forward to ICS coming out.

--Wag--
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Old February 20th, 2012, 10:49 AM   #179 (permalink)
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Does it matter how I drain the battery fully? Can I just crank up the brightness all the way and leave the screen on to do it?
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Old February 20th, 2012, 02:34 PM   #180 (permalink)
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Doesn't matter how you do it, you just have to let it shut itself off. When I did this, I also turned it back on a couple of times just to be sure it was all the way down. It seems to have helped somewhat, too.

--Wag--
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Old February 20th, 2012, 02:37 PM   #181 (permalink)
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UPDATE:

I discovered that I had Facebook updates turned on. Turned that off and now, my battery is lasting practically forever.

Overall, if I have all automatic updates for e-mail, etc. turned off, I don't have the serious battery drain going on. They are just things for which I don't need updates.

Also, when I review the graph, it appears that the most serious drops in batter power occur whenever I DO hit the wireless via a manual refresh on e-mail or FB or any other web access system.

--Wag--
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Old February 20th, 2012, 05:52 PM   #182 (permalink)
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the "solution" I had was only temporary. It was great the 1st day, but later the "Android.." process usage started going up, and it varies but it's not better than it was. One of my phones has email sync on, the other one doesn't - this makes no difference.
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Old February 21st, 2012, 02:28 PM   #183 (permalink)
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Quote:
Originally Posted by LouWags View Post
UPDATE:

I discovered that I had Facebook updates turned on. Turned that off and now, my battery is lasting practically forever.

Overall, if I have all automatic updates for e-mail, etc. turned off, I don't have the serious battery drain going on. They are just things for which I don't need updates.

Also, when I review the graph, it appears that the most serious drops in batter power occur whenever I DO hit the wireless via a manual refresh on e-mail or FB or any other web access system.

--Wag--
In the battery usage tab, does it still say Android OS for you? Or is it now Display as the primary battery usage.
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Old February 21st, 2012, 03:57 PM   #184 (permalink)
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I don't have a facebook acc. or sync on neither phone and it makes no difference.
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Old February 21st, 2012, 08:29 PM   #185 (permalink)
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After reading this thread, I'm so glad I didn't upgrade to 2.3.6. Overnight, I lose about 2-3% in 7-8 hours. Battery goes almost 2 days with normal use. Compared to almost always looking for an electric outlet when with the Captivate this is a breath of fresh air. If I was having battery issues, I'd defintiely be looking at an extended battery
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Old February 24th, 2012, 07:59 AM   #186 (permalink)
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Decided after reading much of the thread to turn my WiFi off with the exception of updates or getting apps. After switching off wifi, I'm seeing that battery drain is less. Only lost about 3% overnight, with data turned off while the screen is off.
Thinking about reverting to 2.3.4(?). Haven't decided yet.
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Old March 1st, 2012, 01:50 PM   #187 (permalink)
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Been reading this section and wondering - what about Widget Locker? Could it be pulling alot of batter power when the phone is in sleep/lock mode?

I have used it since I got the phone and decided to try without it and see what happens.
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Old March 1st, 2012, 01:52 PM   #188 (permalink)
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Nope I dont use it. and I have the problem.
I dont think it comes down to a particular app considering how many people are faced with the issue. It seems more like a core service.

I would be interested in hearing if anyone is on 2.3.6 and experiencing "Good" battery life without resorting to things like juice defender, etc.
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Old March 1st, 2012, 02:10 PM   #189 (permalink)
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My batter breakdown shows my display is what sucks the power - like over 80%! Not sure why as I don't use live wallpapers or even have alot of widgets - only have 4 and they are ones I need re: email, text, etc.
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Old March 1st, 2012, 05:05 PM   #190 (permalink)
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I got my GS2 last weekend and downloaded the 2.3.6 update, but didn't install it. I wanted to see what it was all about first. Thanks to you guys, I was able to delete it from my phone before it auto-installed.
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Old March 2nd, 2012, 09:56 AM   #191 (permalink)
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This is what I did to test out what is sucking the juice:

-turned off wifi
-deleted Widget Locker
-did not use Bluetooth on commute into work
-did not check email on phone at all
-texted maybe 5 times at the most
-no phone calls made or rec'd

Unplugged from charging at 7am this morning. It is now 1055am and phone is at 77%

So annoying.
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Old March 7th, 2012, 09:45 PM   #192 (permalink)
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Quote:
Originally Posted by dksmoove View Post
In the battery usage tab, does it still say Android OS for you? Or is it now Display as the primary battery usage.
Display, typically. When I have the display set up on auto brightness, the percentages are about the same for each.

Generally, I have wireless turned off and all auto updates turned off for e-mail, news services, etc. etc. If you have to have them on, then set the time for updates as long as you can stand.

--Wag--
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Old March 10th, 2012, 11:23 PM   #193 (permalink)
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Quote:
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I think we need to be the squeaky wheel here guys.
Perhaps we can start here: https://twitter.com/SamsungMobileUS

Okies I tweeted my tweet as well...
Thank you all for the thread.. I don't feel alone anymore... In fact I thought the cause for battery drain was a defective battery, as my wife's phone battery lasts about a day and a half! And she talks a lot! (But she does not text much or go online)
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Old March 10th, 2012, 11:25 PM   #194 (permalink)
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Never mind.. See my newer post. Thanks.
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Old March 12th, 2012, 12:36 AM   #195 (permalink)
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Default Battery WAS defective...

I took my phone to the shop today (yesterday actually)... They replaced my battery, and... so far, the new one seems to be working a lot better than the one the phone came with...

Just FYI...
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Old March 15th, 2012, 08:22 PM   #196 (permalink)
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Quote:
Originally Posted by godsdragon View Post
I took my phone to the shop today (yesterday actually)... They replaced my battery, and... so far, the new one seems to be working a lot better than the one the phone came with...

Just FYI...
That is more than likely a fluke. I find the only thing that works for me is to reset my phone every day when I take it off the charger. When they replaced your battery they reset your phone, so you are probably benefiting from that and not the new battery.
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Old March 16th, 2012, 09:57 AM   #197 (permalink)
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mine just seems to get worse every day. I can't believe they haven't addressed this. Well, yes I can.. but it's beyond disappointing. I used to get a good 20-26 hours. Now I'm luckily if it doesn't start battery low warnings in 12hrs.
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Old March 16th, 2012, 10:51 PM   #198 (permalink)
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Default solution, revisited

Guys, see my post #97 here. I reverted to 2.3.4 soon after "upgrading" to 2.3.6 and my battery life has been fine ever since! The instructions may look a bit complicated, but they are not and they are easy to follow. Why turn off your wifi if you can revert to 2.3.4 and keep it on all the time, like I do? All my apps and settings were preserved during the rollback process. Note that I never rooted my phone, had a stock 2.3.4 that came with it from AT&T.

If it's too much trouble to go to my post #97, here is a link with instructions on the rollback process (just make sure to stop before step 8, do NOT do factory reset, it's not necessary and will erase all your apps and settings):
How to Unroot AT&T Galaxy S2! [SGH-i777] | Galaxy S2 Root
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Old March 17th, 2012, 06:40 AM   #199 (permalink)
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I777 here. Did OTA upgrade to UCKK6 right after getting the phone. Had the battery drain issue, was a lot worse at work than at home when on Wi-Fi, possibly more proof of the "dirty network" issue? Anyway, I followed the "how to return your phone to the store for warranty purposes" guide over on XDA to return my phone to UCKH7. Battery drain issue has thankfully gone away.

I haven't seen the AP Mobile Widget problems others have had on UCKH7. In fact, it doesn't show up under my list of running services, and it hasn't effected my data usage at all. How does this issue manifest itself for others? I seem to have dodged the AP Mobile issue somehow.

Also, I don't see a need to stop the OTA updater service from running, because it hasn't prompted me to update to the newer version. Does it automatically update without asking you? Or simply keep prompting you?

I've been back on UCKH7 for about a week now, everything's back to normal. On UCKK6 I could almost watch the battery life indicator slowly drain away.
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Old March 17th, 2012, 08:09 PM   #200 (permalink)
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The updater wont run unless you go into settings and check for an update. When it finds the 2.3.6 update it will let you postpone it three times but will then try and force you to upgrade unless you kill the service and then clear its data.
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