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[Q] Mi2S High Idle Drain (wakelock?)

OP SanguineDrone

30th May 2014, 07:33 PM   |  #1  
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I have a Mi2S and I'm running the latest stock ROM 4.4.23.
Ever since the 4.4.11 update I've had poor idle battery life.

Before that when I look at my battery usage, as long as I have good signal and the screen is off, the battery level graph is flat.
Now, almost always when my phone is idle, no matter what there is some heavy drain, it was approximately 25% over 12 hours.

I've tried all the MI2S updates since then and they are all having this issue. I have not installed any new apps or changed anything on my current ones.

Attached are some wakelock detector screenshots.

Sometimes 小米服務 has many wake alerts, but sometimes it does not. Weather app is disabled, and autosync is disabled too. Occasionally 小米服務 does not have many wake alerts but that doesn't seem to reduce idle power draw, and I think it had this many wakes before as well.

Also the 3h wakelock app is the music player; the idle drain happened when the music player was off.

Thanks for reading.
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1st June 2014, 06:28 AM   |  #2  
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3rd June 2014, 12:55 AM   |  #3  
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So I spent a night in airplane mode, and voila! 3% drain over about 12 hours!

I'm still trying to figure out exactly what it is, but whenever I get the chance to I'm going to spend another night in airplane mode with wifi on.
5th June 2014, 09:37 AM   |  #4  
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5th June 2014, 01:32 PM   |  #5  
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There is a nice little utility app called power tutor, which shows you exactly which app drains your device. Maybe the problem isn't rom related...
You can find it on the play store.
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