The Galaxy Nexus has a 4G chipset with a sim card. I am curious about the other uses of this sim slot. For example, the HTC rezound has unannounced global capabilities, just by swapping in a sim. Can the Gnexus do that? Also, is it only 700Mhz LTE? It would be great to hop networks if AT&T got LTE to me first. From the looks of wikipedia, I would need a multiband LTE phone to be able to roam internationally, but i don't hardly leave the country.