Entitlements Server holds Preferred Roaming Network List incl.
- MCC (Mobile Country Code).
- MNC (Mobile Network Code).
iPhone overwrites “Data Roming OFF” to ON to choose cheapest Roaming Plan.
Entitlement Server provides seamless activation of iMessage/ Face Time.
The dedicated action is exchanged between the device and Entitlement Server and Apple servers (there is no need to send SMS any more).