Verizon's Moto X supports the carrier's CDMA network, the AT&T HSPA+ network (oddly enough), foreign HSPA+ networks on the 900 and 2100MHz (but not 1800MHz) bands at speeds up to HSPA+ 42, and Verizon's LTE network on 700MHz only?for now. A firmware update will bring support for Verizon's AWS LTE spectrum, which will improve LTE speeds where it's implemented.