Computer Help and Support

Quit all apps. Swipe them away.

In sequence, press the Volume Up then Volume Down buttons then press and hold the Sleep button. Keep it depressed as the Slide to Power Off screen appears and keep it depressed as the screen goes to black. Keep the Sleep button depressed until the white Apple icon appears then you can release it. When the beginning screen appears, you’ll have to type in your six-digit passcode to open the device.

This routine resets the phone without destroying any data or settings. It almost always works for me when my iPhone gets weird.

Good luck!