Verizon's iPhone 5 Is Unlocked From The Factory
Sprint and AT&T only sell locked iPhone 5 units, which means those cannot be used on other carriers. But the VZW model will accept any other nano-SIM from any other carrier, including AT&T and T-Mobile USA right here in the States, as well as nano-SIMs from international carriers when you travel. It obviously makes Verizon's version way more flexible, particularly for those who leave the country often. There's a video below showcasing the discovery.