If your iPhone or iPad isn’t responding and you can’t turn it off and on, try forcing it to restart. Note that this will not delete any data.

For iPads & iPhone 8, X, and newer:

• Quickly press and release the volume up button.
• Quickly press and release the volume down button.
• Press and hold the side button until the Apple logo appears, and then release. (The screen will temporarily go black as the iPhone/iPad shuts down and reboots.)
• Keep holding the side button until you see the Apple logo.

iPhone 7/7 Plus:

• Press and hold the sleep/wake and Volume Down buttons simultaneously for at least 10 seconds.
• Keep holding both buttons for about 10 seconds, until the Apple logo appears