LG Electronics -P509 Cell Phone User Manual

Setting an unlock pattern: You can draw your own
unlock pattern by connecting four or more dots.
When the phone’s screen locks and you have set an
unlock pattern, press the Power/Lock Key and draw
the pattern to unlock it.
Caution: To set an unlock pattern, you must first
create a Gmail account.
Unlock screen
Whenever your LG-P509 is not in use, it will return
to the lock screen. Drag the unlock icon from left to
right to unlock the screen.