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Samsung Galaxy SII battery issue

post #1 of 12
Thread Starter 
I recently got myself an unlocked SGSII, it's also my first smartphone so I don't really know anything about android...

Well, the problem is, I noticed the battery drain was ridiculously fast, It went from 77% to 30ish% overnight (about 9 hours), people told me it could be the GPS or 3G being active all the time, but that was the first thing I did after I got the phone, so they where off.

After messing around with the phone for 2 days I realized it was the WiFi that was draining the battery like mad, did some tests and, with only wifi on (no GPS/3G/Bluetooth) battery dropped about 3-4% per hour (Idle), while with wifi off, it was less that 1% in 2 hours, also while idle.

I don't have many apps that use internet connection yet, (FB, Whatsapp, google maps, tapatalk, Dolphin HD, gmail, ebuddy and that's about it) I don't think it's normal for the battery to die like this just because wifi is on, what can be causing this? Turning wifi off while the phone is idle isn't really an option.
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post #2 of 12
there is an app called juice defender i use on my galaxy ace that almost doubles my battery life
other then that an average 9-12 hour battery is an android feature
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post #3 of 12
Thread Starter 
Already got that one, thanks though

So it is normal for the battery to die about 5 times faster with wifi on and while idle at that? bummer, not much of a "mobile phone" if the battery doesn't even last 6-8 hours if I use it a little... thought it would last that under constantly browsing or something.
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post #4 of 12
Yes, WIFI is very battery intensive.

My GSII lasts on average one day with moderate use. Android phones have never been any good in terms of battery life.

There are some ROMs you can download that apparently increase battery life by a ton though.
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post #5 of 12
Thread Starter 
So I should take 3-4% battery drain per hour with WiFi on while idle as a normal thing?
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post #6 of 12
Yeah, my SII eats battery life like there is no tomorrow.

It's just part and parcel with the phone unless you're willing to strip it down with a custom ROM.
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post #7 of 12
Thread Starter 
Oh well, I'll look into the custom ROM world and see if I find something I like, thanks for your help!
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post #8 of 12
You can always get a 2nd battery and keep it in your pocket. Thats what I did with my first Galaxy S. I just picked up the Galaxy S2 and have a battery on the way for that. Its thin and doesnt take up much space so if you keep it in your pocket, you wont even notice its there but you will have it for backup if you are out and need it. It comes in handy. But get an OEM one, they cost like $20 on ebay.
post #9 of 12
Quote:
Originally Posted by IcedEarth;15332087 
Yes, WIFI is very battery intensive.

My GSII lasts on average one day with moderate use. Android phones have never been any good in terms of battery life.

There are some ROMs you can download that apparently increase battery life by a ton though.

Smart phones in general have never been good with battery life. Mine lasts me all day and I charge it at night. Thats good enough for me for now.
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post #10 of 12
Hm, I don't think that is quite true. I leave Wifi on while I am in my house, and I generally have a battery life (at around 9PM) of 75+% still. That is with moderate usage, texting, some phone calls, etc
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