Because Verizonís 4G LTE devices use SIM cards, that means many of them (the global-ready ones, anyway) are compatible with the regular 3G/2G GSM bands used everywhere else in the world (no LTE, however). When traveling, simply pop in a prepaid SIM card, configure the APN settings with the network youíll be using the phone on, and boom. Youíre up and running on 3G. Same goes for AT&T in the US (again, no LTE because of incompatible bands).