A master reset will result in the loss of all data stored on the device including 3rd party applications.
This type of reset should only be used as a last resort after all other troubleshooting steps have been exhausted. It is highly recommended that you complete a backup of the device information before proceeding with the steps in this tutorial.
With the device turned off, press and hold the Volume up key.
Note: To turn the device off completely, remove the battery.
With the Volume up key held down, press and hold the Power key.
Release the Volume and Power keys when the second Samsung screen appears.
Use the Volume down key to scroll to wipe data/factory reset.
With wipe data/factory reset highlighted, press the Power key.
Press the Volume down key to scroll to Yes -- delete all user data.
With Yes -- delete all user data highlighted, press the Power key.
Once the wipe is complete, with reboot system now highlighted, press the Power key.
The handset will restart.
The handset is now reset and ready for use.