So here is what I understand (I looked at the chart available in a stick here on these forums) Any VERIZON iphone 5, 5s, 5c or higher is FACTORY UNLOCKED, meaning I can pop the SIM out and use another SIM for any GSM carrier? I just want to be clear because I am selling it and want to make sure it will work for the other person. He plans to use it out of country on a GSM network (didn't say who). That carrier just told him that as long as the phone is unlocked, it didn't matter who the original carrier was. Thanks for your help.