The Droid X does NOT use a SIM Card. I am in Vietnam and this is a big problem ALSO there is a big problem with unlocking it. I saw the "Copy" of it at the Motorola Store In Saigon, Think its called the HC8. Same as Droid X but running Windows software. They want over $700 for it too. Hope they come out with another phone with a 4.3" screen that will accept a SIM Card and use Android system. That big screen makes the phone ! They also let me put the store sample in my pocket. Even though its big it felt better than my G1 as the G1 is thick. The X is thin,,, Great phone.