I have an iPhone 5 on Sprint, and just upgraded to iOS7. At my vacation home I usually get extended service (I think from Verizon) anyway, I noticed on the way here I had no service and I knew from the beginning that this was very odd. The first thing I did was check my dads phone, a 4S, and sure enough he had service and I didn't along with my sisters phone, a 5. I have no service, can't even call anyone. Any advice? What can I do? I've tried resetting all settings and network settings, I'm clueless here. (Posting from my dads phone)