Flashing off and on
my iPhone 7 plus will not stay on it flashes of and on
iPhone 7 Plus, iOS 12
Question marked as
We can't diagnose that kind of issue remotely.
Try to force restart your device, following these steps: Force restart iPhone - Apple Support
If you get no improvements, it could be a hardware failure. Make an appointment at an Apple Store or Authorized Service Provider and have your 7+ inspected: Apple – Location Selector
Regards
Giulio