Instructions to pin screen on Blue devices

How to protect your privacy when lending a Blue smartphone or tablet to someone else. Instructions for setting up "screen pinning" on a Blue brand device. Block an application on the screen from which the user will not be able to exit without knowing the unlock pin, in this way you will prevent them from seeing your messages, photos and private data that you do not want to show.

Blue Gate BG4 Blue Gate BG4
Blue Gate BG4I Blue Gate BG4I
Blue Gate BG3 Blue Gate BG3