Restarting an iPhone turns it off and back on without deleting your data. It is one of the safest first troubleshooting steps for temporary glitches, slow apps, or odd interface behavior.
Restart an iPhone With Face ID
- Press and hold the Side button and either Volume button.
- Drag the power-off slider.
- Wait about 30 seconds for the iPhone to turn off.
- Press and hold the Side button until the Apple logo appears.
Restart an iPhone With a Home Button
- Press and hold the Side button or Top button on older models.
- Drag the power-off slider.
- Wait for the iPhone to shut down.
- Press and hold the Side or Top button until the Apple logo appears.
Restart From Settings
You can also go to Settings > General > Shut Down, drag the slider, and then use the hardware button to turn the iPhone back on.
If the iPhone Is Frozen
A normal restart requires the screen and controls to respond. If they do not, use the appropriate force-restart procedure instead. A force restart is different from a factory reset and should not erase your personal data.
When a Restart Is the Right Fix
A restart is especially useful after an app freezes, Bluetooth or Wi-Fi behaves oddly, or the interface stops responding normally but the iPhone is still usable. It is low risk because it does not remove personal data. If the same problem returns immediately after every restart, look for an app update, iOS update, storage shortage, or a more specific setting problem instead of repeatedly rebooting.