I will be leaving for Portugal this Friday. From what I have read online (please correct me if this is not the case) the Verizon iPhone 5 is already unlocked. My question is am I better off using Verizon's global data plan at $20 for 100 mb it purchasing a vodaphone SIM card over in Portugal. I really am not interested in making phone calls but do want the data. Also if I do purchase a vodaphone card can't just insert it and I am good to go?