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Author Topic: Samsung Galaxy S2 and Jelly Bean  (Read 1873 times)
pumbaa
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« on: Saturday, July 27, 2013, 19:52:34 »

Ever since I 'upgraded' to Jelly Bean, my Galaxy S2 has gone from being a great phone to an utter turd. Battery life is now almost non-existent (was fine before upgrading) and barely lasts the day - I'd normally end up with about 70% left, now I'm pretty much always down to single figures, even with very light use.

Any other S2 owners having the same problem? Is there a solution?
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Batch
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« Reply #1 on: Saturday, July 27, 2013, 19:55:40 »

Back everything up (SMS may be tricky) and try a factory reset.

http://forums.androidcentral.com/samsung-galaxy-s-ii/280046-jelly-bean-slow.html
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Samdy Gray
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« Reply #2 on: Saturday, July 27, 2013, 20:05:38 »

Download this: https://play.google.com/store/apps/details?id=com.bvalosek.cpuspy&hl=en_GB

Check the phone is going into deep sleep when it's not being used. Could be a rogue app keeping the CPU awake which will drain the battery.

And this: http://forum.xda-developers.com/showthread.php?t=1179809

Will tell you what 'wakelock' is keeping the phone from going into deep sleep.
« Last Edit: Saturday, July 27, 2013, 20:18:27 by Samdy Gray » Logged
pumbaa
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« Reply #3 on: Saturday, July 27, 2013, 20:22:25 »

Right, CPU Spy tells me the phone is in a deep sleep for 20% of the time, and running at 200 MHz for 58%. Remainder of states are <10% each. I'm guessing I have a wakelock then?
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Samdy Gray
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« Reply #4 on: Saturday, July 27, 2013, 20:29:48 »

Yeah definitely something preventing it from deep sleeping. Install the other app I linked to, leave the phone for an hour or so and then take a look at partial wakelocks.
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pumbaa
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« Reply #5 on: Saturday, July 27, 2013, 20:39:14 »

Ta. Will report back.
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Nomoreheroes
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« Reply #6 on: Saturday, July 27, 2013, 21:10:17 »

Oh! This is exciting!!
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