Hello all. I'm having a hard time getting a definite answer on this. If I buy an iPhone from Verizon (I'm eligible for an upgrade), can I bring it UNOPENED to another country that only uses GSM, open it there, pop in a local SIM card, and activate and use the iPhone? Will it activate with a non-Verizon SIM? Will it then work with a non-Verizon SIM? Thank you!