Apple iPad mini 4
iPadOS 15.2
1 Turn on the screen lock
Press On/Off.
2 Turn off the screen lock
Press the Home key.
Press the Home key to turn off the screen lock.
3 Set automatic screen lock
Press Settings.
Press Display & Brightness.
Press Auto-Lock.
Press the required setting.
4 Return to the home screen
Press the Home key to return to the home screen.