Z3X Activation is a personal security key hardcoded at activation (sim)card. It grants you full access to Z3X firmware databases (3.5 Tb), manuals, support.
If anything happens and the card was damaged, see here for more information.
All models and supported features you can see on our website, at the check your phone page
If you want to be sure that you`re using licensed Z3X products - here checklist of our official resellers.