I searched the forum and didn't see anything, so I apologize if this is discussed. I spoke to someone from AT&T today and she mentioned that if I do not purchase a 3G data plan for more than 2 months, that I will have to go get a new SIM card before I can get 3G again. Is that true? I purchase the 3G plan as I need it (if I travel). So, the possibility of me going more than a couple months without 3G is very likely, although it hasn't happened yet. So how does that work? If I don't have a 3G plan for more than 2 months, then before the next time I use it, do I have to go to the AT&T store or Apple store?