1. iMore Question's Avatar
    My iPhone 5 with IOS 10 is using about 40% of battery overnight. 8 hours idle and from 80% to 40% overnight. No Wi-Fi connected. The carrier signal is at stable 1 to 2 bars. Battery usage said that the most heavy app was Reddit which was 16% while on use.
    11-13-2016 12:56 AM
  2. Ling Cheung's Avatar
    It seems like a lot of people with the old devices is having problems with battery drain after installing iOS 10.
    11-13-2016 02:02 AM
  3. Queena Yang's Avatar
    Reboot your iPhone. Press and hold down the Home button and on/off button until the Apple logo appears.
    Reset All Settings. Settings > General > Reset > Reset All Settings.
    11-23-2016 02:50 AM

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