Hello, I am traveling to Italy in about a week and need help figuring out the best way to be able to use my Verizon iPhone 5 there. Need to be able to check email once a day and make a rare phone call, and light internet surfing. Biggest need is to be able to text (mainly iMessage) many times a day. I'll be there 3 weeks. Is it better to use Verizon's global services, or to buy (or rent) a sim card from a carrier over there? How hard is it to get a sim card there that will fit an iPhone 5? Any idea on costs for the various options? Thanks!