From the Home screen, tap Settings.
Scroll to and tap General.
Scroll to and tap Transfer or Reset iPhone.
Tap Reset.
Tap Reset All Settings.
If a device passcode has been set, you will need to enter it.
Tap Reset All Settings again.
Resetting your settings will reset all customized settings on iPhone. Personal information will not be deleted.
Tap Reset All Settings again.
You've completed the steps!
