If the Power/Lock button is faulty and you cannot use the source's usual restart method of holding Home and Power until the Apple logo appears, here is an alternative.
Go to Settings, General, Accessibility and enable Bold Text. In the described iOS version, changing this option requires a restart. To remove bold text, repeat the process.
Another way to restart without the power button is to open Settings, General, Accessibility, scroll to Interaction and open AssistiveTouch.
Make sure AssistiveTouch is enabled.
The following button appears on screen:
Tap it and open Device.
Hold Lock Screen until the Power Off option appears at the top, then slide right to turn the iPhone off.
To turn it on again, connect the charger or a computer using USB, completing the restart. If it does not turn on, there may be a device or cable fault; contact us to arrange diagnosis or repair.
