42 
screen lock already. 
Pin a Screen 
1.  Ensure that screen pinning is turned on. 
2.  Open the recent apps list. If the app you want to keep in view 
is not in recent apps, open it first. 
3.  Swipe left and right to find the app card. Touch    on the 
right side of the app icon at the top of the card and select 
Pin. 
Unpin the Screen 
1.  To unpin the screen and return to normal use, touch and hold 
both    and    for virtual navigation to unpin it. 
2.  If screen lock is enabled for screen pinning, swipe up on the 
lock screen and draw the pattern or enter the PIN/complex 
password. You can also unlock the screen with your 
fingerprint or face if you have registered it on the phone.