Psychogony, I am specifically talking about Game Center and Google Play services, as tegleg says, where the matchmaking etc. are all done in an external UI that is built into android and iOS.
For info this works in UDK (UE3) using uscript where you create delegates for server and client that are called from the subsystem once Game Center decides who is hosting and who are clients.
It’s good to know that you have tested local multiplayer successfully on mobile though, I may have to resort to that 