Help 2.3.6 Battery life sucks

NinerBikes · Jan 30, 2012

misterrunon said:
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.

misterrunon · Jan 30, 2012

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.

dwykofka · Jan 31, 2012

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.

MX21 · Jan 31, 2012

dwykofka said:
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.

NinerBikes · Jan 31, 2012

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?

dwykofka · Jan 31, 2012

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.

SonuK · Feb 1, 2012

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.

MX21 · Feb 1, 2012

MX21 said:
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. :thinking:

(G) · Feb 2, 2012

MX21 said:
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.

dksmoove · Feb 2, 2012

Or, to turn off wifi for a long time?!

IndyDave · Feb 2, 2012

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.

NinerBikes · Feb 2, 2012

IndyDave said:
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. :eek:

Revert back to 2.3.4 and don't let them have their way with you.

IndyDave · Feb 2, 2012

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.

rmreid · Feb 6, 2012

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

dwykofka · Feb 6, 2012

Looks like we are waiting for ICS (March) guys

dksmoove · Feb 6, 2012

It is confirmed for March?

dwykofka · Feb 7, 2012

According to: Galaxy S2 ICS release seemingly dated

March is scheduled for release which does line up with their Q1 statement.

fldude99 · Feb 7, 2012

rmreid said:
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?

skidaddytn · Feb 7, 2012

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.

rmreid · Feb 7, 2012

fldude99 said:
May I ask where you picked up on the Nexus?

Sent you a PM

coolprice · Feb 8, 2012

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?

ay42 · Feb 8, 2012

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.

BWRpota · Feb 12, 2012

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.

MrPeregrine · Feb 17, 2012

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:
http://androidforums.com/samsung-ga...-suddenly-drain-within-hours.html#post3954755

fldude99 · Feb 17, 2012

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

Help 2.3.6 Battery life sucks

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