Best non-phone selection - Verizon
Verizon's non-phone collection includes iPads, Samsung and Motorola tablets, HP netbooks, 3G and 4G hotspot base stations and 4G USB modems. Some phones, like the iPhone, can act as base stations.
AT&T has the iPad and Samsung Galaxy Tab. It has no netbooks, USB modems or base stations. Its iPhone can act as a base station.
Sprint carries the RIM PlayBook, Dell Inspiron netbook, one 4G USB modem and one 4G hotspot base station.
T-Mobile has 3G and 4G USB modems, Dell Inspiron netbooks, Dell Streak tablets, Galaxy Tab and its own branded tablet with Android.