LG LM-K520EMW Guia Del Usuario página 320

• Smart Lock: Allow you to set trusted devices, places, voice, and/or
on-body detection that will allow your phone to remain unlocked.
• Available menu options may vary depending on the lock screen method
selected.
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.
Disable KnockON
If you don't want to use the KnockON function, set as follows:
On the home screen, tap Settings Extensions KnockON and drag it
to disable the function.
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