Restarting or resetting iPhone
If something isn’t working right, try restarting iPhone, force quitting an app, or resetting iPhone.
Restart iPhone: Press and hold the On/Off button until the red slider appears. Slide your finger
across the slider to turn off iPhone. To turn iPhone back on, press and hold the On/Off button until
the Apple logo appears.
If you can’t turn off iPhone or if the problem continues, you may need to reset iPhone. A reset
should be done only if turning iPhone off and on doesn’t resolve the problem.
Force an app to close: Press and hold the On/Off button for a few seconds until a red slider
appears, then press and hold the Home button until the app quits.
You can also force an app to quit by removing it from the multitasking bar. See “Opening and
switching apps” on page 19.
Reset iPhone: Press and hold both the On/Off button and the Home button for at least ten
seconds, until the Apple logo appears.
For more troubleshooting suggestions, see Appendix B, “Support and Other Information,” on