1. Android Central Question's Avatar
    This S9 is a flaky device. The screen stayed on all night long. I did have an app open and the phone was on charger. That may have been the cause.
    01-06-2019 08:35 AM
  2. belodion's Avatar
    Well I guess it depends on what app.
    01-06-2019 09:40 AM
  3. Rukbat's Avatar
    And you can always hit the power button to turn the screen off.
    01-06-2019 01:32 PM
  4. L0n3N1nja's Avatar
    Some apps don't let the screen sleep, that's the same on any operating system.
    01-06-2019 03:09 PM
  5. B. Diddy's Avatar
    Welcome to Android Central! Also, check if your Developer Options are turned on, and if so, if the Keep Awake option is turned on. That prevents the screen from turning off as long as the phone is plugged in.
    01-06-2019 03:58 PM
  6. mustang7757's Avatar
    I agree with B.Diddy make sure those settings are off in developers setting
    B. Diddy likes this.
    01-07-2019 11:27 PM

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