If your iPhone won't turn off the usual way, you can force restart it with a button combination specific to your iPhone model.

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. So, your ...

If your iPhone suddenly has no service, there are a few things you can try before contacting your network coverage provider ...

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 ...