I'm changing my status of the Galaxy S2 "from love it" to "like it"
The reason for that is the very poor battery life.
I came back to AT&T the next day after I got my GS2 cause battery drained in the few hours to 35% after being fully charged earlier.
I found that being very odd.So they exchange my unit to the new one.
Got better, by battery still draining fast.
I have set my phone to all suggested settings like turn of WIFI , screen brightness etc.
Still not going well.
I know I'm not the only one and would appreciate any suggestions or please route me to the proper thread on this forum.
Many thanks!!!
Yeah, battery life is my sole complaint. I have updates on apps set to every hour, and still I am at 30% by end of work day. Not good. I even have JuiceDefender running on aggressive. I really thought battery life was one of the reasons to buy this phone but apparently not true.
Well, many people - many opinions.
I went to some other Android forums and people were saying that WIFI should be turned off cause eating battery life.
Oh,Well. I have installed Juice Defender a few hour ago and it currently running in advanced mode.
I'm not familiar well enough with that app yet ,but it shows X1.78 on the home screen whatever that means.
I'm hoping this app would help.
I have used my phone only for one call today the rest of the time it was idle.
Currently, the battery gadget shows 70%.
Thank you all who replied.
I expect that you have an application that is eating your battery. Before you assume that the phone is broken, you may want to try running it completely stock (no added applications) for a couple of days, and assess the battery life that way. Add applications one at a time, and judge their impact.
For example, I run touchdown exchange client with "push", and I can typically get about 40 hours of phone use for work, with about 2 hours total of screen-on time and moderate emailing. I don't use any social networking apps, or games. Now, If I install the yahoo mail client for android (which is also push-based, and one would assume written by professional software engineers), battery life drops unacceptably to somewhere on the order of 15 hours.
For more forensics on battery use, get "better battery stats" and "cpu spy". Check over at the XDA forums' "known identified battery drainers thread", for instructions on how to use the apps, and some other great advice.
Here's the link:
[Only registered users can view links. ]
Hope this helps, consider pressing thanks if it did; that makes me smile.
AoN
PS, I'm still on 2.3.4 (I used TiBu to freeze the update manager)
Last edited by anneoneamouse; 02-21-2012 at 11:20 AM.
Reason: Added version
Turn wifi off if you're not able to connect to a wifi hot spot. From all that I've read wifi uses less than radio but leaving wifi on when it's not available will waste some of the battery.
I bought Tasker and set it up to turn off all data and wifi but turn it on every 10 min to check for incoming email. It turns on airplane mode when I sleep too. I really like my live wallpapers but when I'm in a situation where charging my phone will be difficult ill turn LW off. I also bought 2 more batteries and a battery wall charger for all day phone usage when I can't easily charge.
Even after all the adjustments I get about 9hrs. I use the app Bad Ass Battery Monitor to calculate battery usage.
The update is the reason for the poor battery life. Before the update, I got a solid day (4:30 AM - 10 PM) without having to worry about my battery. After the update, I'm lucky if I make it til 6 or 7 PM, and if I actually use it for anything that day other than a few text messages, I'm lucky if I make it past 2 or 3 PM.
As a couple others have said, the wifi is the culprit here. Something in the update really screwed up the wifi. It's not that the wifi itself is eating your battery, but when wifi is on, your phone is "awake" almost all the time. When you turn the wifi off, it wakes up way less often.
I also think there's something else at play here, because even having wifi off for a whole day, I get way less time out of my battery than I did before the update.
It's almost unbearable, but I like everything else about the phone enough to make it worth it to me to have to charge it constantly.
Im running the updated software (KK6 2.3.6) When I plugged my phone in before bed last night it had been off charger 17hrs. and 13mins...with a screen on time of 2hrs. and 15mins....and I had 37% remaining.
However I don't use wifi at all. I have a pretty strong data signal at work, home, and all points in between. If you go over to XDA and do some reading you will see that the horrible drain is due to a wifi bug in the KK6 firmware that causes your phone to be awakened every few seconds when wifi is on...even if your screen is off.
So if you must use wifi...simply turn it off when your finished using it...cause its not really going to sleep when you think it is otherwise.
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