Other than the maps, (that aren't that detailed) is there any way to know if you are in the mobile broadband zone.
I will be away this weekend and know I will be near the edge of the zone, so it would be good to know if I am in or not.
My old nokia phone had an app that would show the MCC and MNC code and you could tell if you were on 2degrees or roaming. I don't know a way of finding this on my iPhone though.