Hello, Factory Reset is done by turning the phone off, holding the volume up button, holding the home button and then holding the power button till the phone vibrates and you can let go of the buttons. Use volume up and down to move through options and power button to select (don't have to hold, just press once). Select "wipe data" and then "factory reset". Select "yes" to delete all user data and wait for format to complete. Then power off then on and it should be back to original settings. Hope this helps.