Register your phone at Apple My Id, and create an app-specific password. Then logout from iMessage, login back in again and login using your Apple Id.

http://www.imore.com/how-generate-and-mana...asswords-icloud

http://www.dailydot.com/debug/two-step-ver...ssage-facetime/

This post has been edited by engseng: Jan 22 2017, 10:56 AM