Restart your iPhone

Learn how to turn your iPhone off, e poi riaccenderlo.

Come riavviare il tuo iPhone X, iPhone11, iPhone12, iPhone13, iPhone14,iPhone15

1. Press and hold either volume button and the side button until the power-off slider appears.
   
2. Drag the slider, then wait 30 seconds for your device to turn off. If your device is frozen or unresponsive, force restart your device.
3. To turn your device back on, press and hold the side button (on the right side of your iPhone) until you see the Apple logo.

How to restart your iPhone 6, 7, 8, o SE (22a o 3a generazione)

1. Press and hold the side button until the power-off slider appears.
   
2. Drag the slider, then wait 30 seconds for your device to turn off. If your device is frozen or unresponsive, force restart your device.
3. To turn your device back on, press and hold the side button until you see the Apple logo.

Come riavviare il tuo iPhone SE (1prima generazione), 5, or earlier

1. Press and hold the top button until the power-off slider appears.
   
2. Drag the slider, then wait 30 seconds for your device to turn off. If your device is frozen or unresponsive, force restart your device.
3. To turn your device back on, press and hold the top button until you see the Apple logo.

If your reset is still unsuccessful refer to the official iPhone guide

https://support.apple.com/en-gb/HT201559

Maybe your iPhone needs some awesome phone cases!