1. Turn the power off.
2. Hold Volume Up + Home Button + Power Key
3. Release when Samsung logo appears
4. Select "Wipe data/Factory Reset"
5. Hit Power Key to select
6. Select "Reboot System now"
7. Hit Power Key to select.
Note: If a factory reset is performed, all installed applications and user data will be erased. Please remember to back up any important data before performing a factory reset.