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Turn on screen pinning
1.
Swipe down from the top of the screen once using two fingers, or twice using one finger.
2.
Tap
> Security > Screen pinning.
3.
Turn on the switch.
4.
To unpin a screen without entering your screen lock, turn off the Ask for <Password | PIN | Picture | Pattern> before
unpinning switch.
To turn off the screen pinning feature, turn off the switch.