My phone will not turn off when trying to slide across the screen
How do I turn my phone off if the slide function doesn’t seem to be working?
Restart your device. Make sure your screen is clean and free of any debris or water. Disconnect any Lightning or USB-C accessories. If your screen works after removing an accessory, try using a different outlet, cable, or charger.
If the screen isn't working on your iPhone or iPad - Apple ...