Instructions to pin screen on DNS devices

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

DNS S5701 DNS S5701
DNS S4003 2SIM DNS S4003 2SIM
DNS S4006 DNS S4006
DNS S4505M DNS S4505M
DNS SI4301 DNS SI4301
DNS S4010 DNS S4010
DNS S4502 2SIM DNS S4502 2SIM
DNS S5005 DNS S5005
DNS S5008 DNS S5008
DNS S5301Q DNS S5301Q
DNS AirTab MW1011 DNS AirTab MW1011
DNS S4001 DNS S4001
DNS S4503Q DNS S4503Q
DNS S4507 DNS S4507
DNS S4508 DNS S4508
DNS S4509 DNS S4509
DNS S4701 DNS S4701
DNS S4703 DNS S4703
DNS S4704 DNS S4704