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3.  Swipe left or right to find the app card. Then touch   at the 
top of the card and select Pin. 
Unpin the App 
1.  To unpin the app and return to normal use, touch and hold 
both   and    for virtual navigation; swipe up from the 
bottom of the screen and hold for a while for gesture 
navigation. 
2.  If screen lock is enabled for app pinning, swipe up on the lock 
screen and draw the pattern or enter the PIN/password. You 
can also unlock the screen with your fingerprint or face if you 
have registered it on the phone.