To lock an iPad screen, press the Top/Power button once to turn off and lock the screen.
To prevent changes or touches, go to Settings > Screen Time and enable Guided Access or set a Screen Time passcode.
To lock the iPad screen, press the Top button once. This immediately turns off the display and locks the device. You can also enable Auto-Lock by going to Settings > Display & Brightness > Auto-Lock and choosing a time interval for the screen to lock automatically when not in use.
To lock an iPad screen, press the Top (Power) button once. The screen turns off and locks instantly. You can also enable Auto-Lock in Settings to lock the screen automatically after inactivity.
To lock an iPad screen, press the Top (Power) button once to turn off and lock the display instantly. You can also enable Auto-Lock by going to Settings → Display & Brightness → Auto-Lock and selecting a time interval for automatic screen locking.