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

Your iPhone's status bar is a helpful dashboard that provides a glance at the vital signs of your smartphone. You're probably used to seeing the Wi-Fi and cellular data icons in this indicator field, ...

Explore software fixes, hardware checks, and troubleshooting tips to regain control of your frozen iPhone. If your iPhone won't turn off, try using the Settings app to shut it down. A hard reset can ...