1. From the home screen, press the Right soft key.
   
2. Scroll to the 'Settings' icon, then press the Center nav key.
   
3. Scroll to 'Phone', then press the Center nav key.
   Note: Alternatively, press '4' on the keypad.
   
4. Scroll to 'Security' then press the Center nav key.
   Note: Alternatively, press '4' on the keypad.
   
5. To enable/disable a security screen lock, scroll to 'Lock Phone', then press the Center nav key.
   Note: Alternatively, press '1' on the keypad.
   
6. Scroll to the desired option, then press the Center nav key.
   
7. If enabling, enter the required password, then press the Center nav key.
   Note: The default password is '1234'.
   
8. To change the password, scroll to 'Change Phone Password', then press the Center nav key.
   Note: Alternatively, press '6' on the keypad.
   
9. Enter the current password, then press the Center nav key.
   
10. Enter the desired new password, then press the Center nav key.
    
11. Re-enter the chosen password, then press the Center nav key to confirm.
    
12. To unlock your phone, enter the chosen password, then press the Center nav key.