I have seen on these boards many mentions of renting cell phones on the island. Are folks doing this to save money, or because US smartphones don't work on the island's network? I carry an iPhone 5s for work, and my employer is "kind" enough to pay for service when I'm overseas, so I had planned on using my phone when we are on the island next week. However, if it turns out that it won't work, I want to warn them in advance that I won't be able to monitor my email as closely. (Not that I'm going to be doing work while on vacation, but they like the idea that if some huge emergency comes up they can reach me.) Thanks!!