If your iPhone lacks a home button or your actual home button is not working, you can add a virtual one using AssistiveTouch.

To zoom out to normal size, hold three fingers together and double-tap the screen with all three fingers at once. To turn off ...

Revive your unresponsive iPhone by forcing it to restart. Additionally, you can try charging the phone or reinstalling iOS.

Turning your phone's connection off and then back on is the quickest and easiest way to try and fix your signal woes. If you're moving around from one location to another, toggling Airplane mode ...