Launch i Tunes on your computer and connect the i Phone.Click on your i Phone’s name to summon the Summary tab.
Return to the Summary tab in i Tunes and click “Restore Backup” to get them back.
If your touch-screen is unresponsive or you can't quit a troublesome app, then reset your i Phone.
Press and hold the “Sleep/Wake” button and “Home” button at the same time.
Under Backups, click “This computer,” followed by the “Back Up Now” button.
Then, return to your i Phone to tap “Settings | General | Reset | Reset All Settings” and confirm when prompted.