Ipad mini screen flickering

If a forced-restart doesn’t resolve the problem, your iPad may have a hardware fault. If you have a first generation iPad mini (which cannot be updated beyond iOS 9.3.5/9.3.6), rather than attempt repair, you would be best advised to instead consider replacement of the iPad with a newer model.

To force-restart your iPad:

• On an iPad with a Home button: Press and hold the top button and the Home button at the same time. When the Apple logo appears, release both buttons.
• On an iPad with Face ID: Press and quickly release the volume up button, press and quickly release the volume down button, then press and hold the top button. When the Apple logo appears, release the button.