Your iPhone won't turn on? How do I force an iPhone restart?

If your iPhone doesn't respond and you can't turn it off and back on, try a forced reboot.

Press and hold the volume up button, then release it quickly.

Press and hold the volume down button, then release it quickly.

Press and hold the side button.

Release the side button when the Apple logo appears.

Illustration of two iPhone models with screens facing up, one with a home button and one without. On each model, the volume button is located on the left side of the iPhone, and the side button is on the right.

Note: For mandatory restart instructions for models such as iPhone 7, iPhone 6s, or iPhone SE (1st generation) that do not support iOS 16 or later, see iOS 15 on this page.