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.
Note: If you forget your pattern and have already assigned your Google account to the phone, tap "Forgot pattern" at the bottom of the Unlock Screen. You will be asked to enter your Google credentials to access the phone again. If you forget your PIN or password, your phone will have to be reset.
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