text: If you want to restart the iPhone 7 quickly and easily because there are problems with an app or the operating system and the smartphone no longer reacts, then you have to proceed as follows:
  Press and hold the following buttons simultaneously for at least 10 seconds:
  - Power On / Off
  - Volume down key
  After 10 seconds, the iPhone 7 will restart immediately and then reload iOS. The smartphone should then work as usual and there will be no problems with a black screen, no reaction or hot surfaces of the device.
  You now know the procedure to restart the iPhone 7 quickly and especially uncomplicated, if nothing else works.