A Master reset is the last resort for troubleshooting. This reset erases all data and restore preferences to factory default specifications. Performing a Master reset is only recommended when the existing data has been backed up or is unwanted.
With the handset open and from the main screen, press OK to choose MENU.
Select Settings & Tools then press OK.
Select Phone Settings then press OK.
Select Security then press OK.
Enter the security code (the default code is the last 4 digits of the phone number).
If the security code has been changed or is unknown, you can visit a Verizon Wireless retail store to have the phone flashed.
Select Restore Phone then press OK.
Enter the Restore Phone Code (default is the last 4 digits of the phone number).