Hey, I bough used xt912 about a month ago. from starting I was having battery issue. it will die so fast like dies in 1 hour in moderate usage and 3 hours in idle mode. so I decide to change battery and add new battery but now I am still having same issue. I recently update to CM12 (official) but the issue was same in others version too. and even stock. I didn't understand do I need to calibrate battery or something?
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