Turn iPad on or off
Use the top button to turn on iPad. You can use the top button (along with either volume button on some models) or Settings to turn off iPad.
If your iPad isn’t working as expected, you can try restarting it by turning it off, then turning it back on. If turning it off and on doesn’t fix the issue, try forcing it to restart.
Turn iPad on or off (models with Face ID or with Touch ID in the top button)
If your iPad doesn’t have the Home button, do the following:
Turn on iPad: Press and hold the top button until the Apple logo appears.
Turn off iPad: Simultaneously press and hold the top button and either volume button, then drag the slider.

Turn iPad on or off (models with the Home button)
Turn on iPad: Press and hold the top button until the Apple logo appears.
Turn off iPad: Press and hold the top button, then drag the slider.

To turn off any model, you can go to Settings > General > Shut Down, then drag the slider.