turn off the iphone

Instructions to turn off 'feature' slow when bottle battery for iPhone runs iOS 11
apple has officially released ios 11.3 beta 2, which allows users to turn off the iphone slowdown feature when the battery is called battery status (beta).
How to automatically turn off the phone
how to timer off your phone with sleeptimer will prevent you from running out of battery when using your smartphone at night and unfortunately falling asleep.