we have Verizon, we were at Disney 15 days (Oct. 18-Nov. 2), and no matter where we were or what time we received phone calls and made them.
I even called my brother while on the ride "Its A Small World" so I could annoy him with the music... he wasnt home, so I let the answering machine pick up and then held the phone out so it could record it... I didnt say a word, however when I returned home, he knew exactly who did it and he said it was as clear as a bell.... great joke and we still talk about it.