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My Google Nexus S battery drains after updating from 2.3.7 to 4.2.2, even if it is turned off. One night I shut it off at 70% charge, and when I turned it on in the morning it was at 9 or 10%. I bought a new battery but it has the same problem. What should I do?

  • Sounds like a hardware problem to me. – roxan Dec 20 '13 at 18:04
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You should calibrate your battery:

  1. Fully discharge your phone
  2. Fully charge it when it is turned off
  3. Disconnect charger and wait a minute
  4. Connect it again and turn your phone on
  5. Delete your data/system/batterystats.bin file (with battery calibration for instance)
  6. Reboot your device and disconnect charger

Also, it is common problem, so try to google it yourself

Hope this will solve it for you

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