
LG T505
Find "Security code"
Press the menu icon.
Press Settings.
Press Device settings.
Press Security.
Press Change codes.
Press Security code.
Change phone lock code
Key in the current phone lock code (default is 0000) and press OK.
Key in a new four-digit phone lock code and press OK.
Key in the new phone lock code again and press OK.
Exit
Press Disconnect to return to standby mode.