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Battery drain ICS randomness

gloriousnumber1

Android Expert
Before ICS, I could stream Pandora at work on 4G, no battery saving measures taken, and after 5 hours be at 70%. Now, it's 50-60%.

I saw that second to "mediaserver", facebook was the second highest battery user (I had my screen off except when I was using my phone) so the next day I did everything the same but shut off Facebook and Instagram. Slight difference. 60% instead of 50%.

To make it weirder, it hardly charges at work during my half hour lunch. 10% bump if that. Before ICS it was 20% charged during that same time.

I made a few extra stops on the way home but did 1-1.5 hours driving, phone plugged in, Pandora again screen on, never went up.

What the heck?
 
Since the update, 4G went from bad to absolutely pathetic and games & Flash media burn more battery, along with the device running hotter. I started with a clean device and using stock and not rooted anymore.
 
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