I'm off to London in a couple of weeks. If i can bum a local GSM sim card from someone, I'll give it a try. Although both Moto and VZW claim VZW's Razr is only CMDA and LTE, it's also true that Moto produces and sells GSM Razrs in other parts of the world. I suspect (or at least hope) that all Razrs have both CDMA/LTE and GSM radios, and that the sim card tells the device what radio to use (just like the Rezound). We'll see....