If you're in need but think you don't have the tools, restarting your iPhone without the power button simply requires a quick visit ... Simply bring up Siri by saying something like "Hey Siri, restart ...

The quickest way to turn off your iPhone 16 is using the physical buttons. Press and hold the side buttonand either volume button simultaneously until you see the power off slider appear on screen.

Quick Answer: To restart your iPhone without the power button, go to Settings > General > Shut Down, then slide to power off. You can also ask Siri to restart your iPhone without the button.