Whether you’re trying to sell it, protect your information while it’s being repaired, or troubleshoot software problems yourself, you might find yourself needing to reset your iPhone.
Resetting your phone to its factory settings will take it back to the basics it came with: no contacts, playlists, pictures, password memory, or anything else you’ve added since the day you bought it. Once it’s reset, the phone’s default settings will be restored and your home screen will have only the apps it came with.