Sprint 4G: What you need As is the case with any wireless service, you need three things to get access: Available in 62 cities, from Everett, Wash. Sprint says that over the next two years, it will fill out a national 4G network. Data Card Info Meanwhile, Verizon has just launched its own LTE network on a trial basis with limited coverage in 38 cities and 60 airports. The company says the network will be complete nationwide in The disk-shaped[…]