What are the 4G LTE bands supported by AT&T? Do they differ from the 4G LTE bands that T-Mobile uses? And what about Verizon Wireless massive 4G LTE network and its supported frequencies? And where is Sprint left in the 4G LTE picture?…
Source: Cheat sheet: which 4G LTE bands do AT&T, Verizon, T-Mobile and Sprint use in the USA? – PhoneArena