1. Scarlegious's Avatar
    My screen wont turn off even after pressing the power button which drains my battery and its show a notification as "USB connected "when i haven't connected any USB ...(samsung galaxy m30)
    03-27-2020 04:55 AM
  2. belodion's Avatar
    Welcome.

    First, do you have reason to suspect that the phone may have been damaged, such as from impact or water?
    Scarlegious likes this.
    03-27-2020 05:26 AM
  3. B. Diddy's Avatar
    Welcome to Android Central! As belodion no doubt suspects, I'd consider a faulty USB port on the phone. Try blowing out the port with a can of compressed air, and clean its contacts with a Q-tip dipped in rubbing alcohol.
    Scarlegious likes this.
    03-27-2020 12:26 PM
  4. Scarlegious's Avatar
    No sir
    03-28-2020 01:22 AM
  5. Scarlegious's Avatar
    Ok sir ill try
    03-28-2020 01:23 AM
  6. Scarlegious's Avatar
    Sir why isn't my screen turning off even after pressing the power button?
    03-28-2020 01:26 AM
  7. B. Diddy's Avatar
    Which phone do you have? Are you able to power off the phone with the Power Button? What happens if you press and hold Power for about 20 seconds?
    03-28-2020 02:21 AM
  8. Scarlegious's Avatar
    I can switch off the phone but the screen does not go off when i press the power button and even after cleaning the usb port it still shows usb connected when its not ..
    03-30-2020 01:05 AM
  9. Scarlegious's Avatar
    My phone is samsung galaxy m30
    03-30-2020 01:08 AM
  10. anon(10614692)'s Avatar
    Try Settings> Apps> Show System Apps> USBSettings> Storage> Clear Cache then Clear data then restart.
    Laura Knotek likes this.
    03-30-2020 06:25 AM
  11. B. Diddy's Avatar
    If Galactic Zoo's suggestion doesn't work, then try wiping the cache partition: https://www.hardreset.info/devices/s...30/wipe-cache/. If that doesn't work, then the next step would be a factory reset. Beyond that, then it's either contacting Samsung for warranty repair (if it's still covered) or bringing it to a repair shop.
    03-30-2020 05:11 PM

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