LG LM-X420EMW Mode D'emploi page 62

KnockON
You can turn the screen on or off by double-tapping the screen.
• This option is available only on the Home screen provided by LG. It may
not function properly on a custom launcher or on the Home screen
installed by the user.
• When tapping the screen, use your fingertip. Do not use a fingernail.
• To use the KnockON feature, make sure that the proximity/light sensor
is not blocked by a sticker or any other foreign substance.
Turning the screen on
Double-tap the middle of the screen.
• Tapping the top or bottom of the screen may decrease the recognition
rate.
Turning the screen off
Double-tap on an empty space on the Home screen and Lock screen.
You can also double-tap an empty space on the status bar.
Basic Functions 61