Hey guys! I received my first VirginSIM a couple of weeks ago and i am perfect with them. The problem is that when i got to Hungary to visit a friend last week, i got no service there with my iPhone, so i tried connecting from my other phone (a nokia 6630), and it registered ok on the network (Vodafone HU for the record), then i put the SIM again on the iPhone and it got the Vf HU signal. When I got back to my country, i had to do the same process because it wouldn't get the home country signal unless i put the SIM card again.
Just for the curiosity, what could be wrong? I have a j/b iPhone 16GB, "unlocked" with VirginSIM.

Thanks in advance,