Hi, I know that all iPhone 5S's sold on Verizon in the States (possibly other carriers too, but Verizon i know for sure) are sold unlocked - because my girlfriend was able to put a Pay As You Go SIM from EE into her iPhone 5S when she came over to the UK from the States. Now will this work the other way around? I have an EE iPhone 5S on contract, and i'm going to visit the States in the summer, so i was just going to buy a Verizon SIM card and swap them over when i arrive. Is EE's iPhone also unlocked, or will i need to pay to get it unlocked? I'm hoping i won't, because it was so simple when she came here; no setting up was required, we just swapped the SIMs out when she landed, and then changed them back over before she arrived home, and the number and network were recognised automatically. Anyone have any ideas?