Instructions to pin screen on Dex devices

How to protect your privacy when lending a Dex smartphone or tablet to someone else. Instructions for setting up "screen pinning" on a Dex 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.

Dex GS454 Dex GS454
Dex DEX GS501 Dex DEX GS501
Dex GS500 Dex GS500