iPhone with broken Power button to turn off
- Open the "settings"App on your iPhone.
- Select the menu item "General", scroll down a bit and select the "accessibility".
- Also pretty far down, you will find the "AssistiveTouch". This you need to enable.
- After a few seconds, a small white circle appears on the edge of the display. Tap on this to open a menu.
- Here, select the item "device" and hold your Finger on the lock marked "lock screen" for a long time pressed, this has the same effect as Pressing the Power button.
- Now you can drag the Slider from left to right, so that the unit turns off.

 iPhone turn off
 
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