I never used Verizon but I heard their iPhone is the most compatible one since it's GSM unlocked even in the US, plus the CDMA function on Verizon and PagePlus. My questions: 1. Is it true that indeed the phone comes unlocked GSM? 2. Can you get GSM LTE (i.e. AT&T or T-Mobile) LTE if you switch to say Net10 or StraightTalk? I know both Net10 and straighttalk offer AT&T LTE. I'm planning to get the new iPhone using Verizon, use it for three months on VZ and then pay the ETF and go prepaid.