From the main screen, press the MENU key.
Tap "Location & security."
Tap "Set up screen lock."
Select the type of screen lock that you would like to set (choose from Pattern, PIN or Password) and follow the instructions on the screen.
Note: Be sure that you use something that you can remember, as this cannot be reset by the provider.
To return to the main screen, press the HOME key.
I'm interactive.Click my buttons.