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Inexplicable Idle Battery Drain

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n_alvarez2007
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Default Inexplicable Idle Battery Drain

So here's the short version of a very long ongoing story.

My fiancÚ and I each bought the GS3 back in October of 2012. Since then, she has been the victim of terrible idle battery life. Being more technically minded than she, I have done literally everything I would have done on my own unit to hers. I rooted it to take advantage of apps like Greenify and betterbatterystats. I even heard the app Wakelock Detector was a good way of pairing with Greenify to eliminate Rouge apps and bad wakelocks.

However it is now over a year and two separate batteries later and she is STILL suffering from this idle battery. Today she had a total of 8 minutes of on screen time and her battery died after about 6 hours of being idle. None of the previously mentioned apps have detected any sort of suspicious activity and I've tried factory resetting the phone numerous times.

Can anyone shed any kind of light on just what the heck might be plaguing her device? I've never experienced battery drain as severe as her unit has demonstrated.

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Current Device: AT&T Galaxy S3 | Current Rom: Quantum.4.1
 
diablo009
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Since its less than an year, did you try going in for a warranty exchange? Maybe its an issue with the device itself?

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n_alvarez2007
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It's been over a year unfortunately. Every time we tried filing for a replacement inquiry Samsung has screwed something up so we never were able to get it exchanged.

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Cooro
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Have you tried swapping batteries for a day since you both have s3s and test out if the battery is faulty or just the phone? If this is not the case, you can try install a custom Rom, I suggest cyanogenmod, it's really light weight and doesn't take up power when idle. I combo cyanogenmod 10.2 stable with greenify and I get 15hrs of moderate light use and after 15hrs I still have 30 percent life left.

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n_alvarez2007
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I gave her my stock battery that came with my GS3 since I was given a Hyperion 4200 mAh external battery. I originally thought it was a faulty battery but my battery is not helping the issue. She's still having terrible battery life. The OP was using my old battery.

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Current Device: AT&T Galaxy S3 | Current Rom: Quantum.4.1
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