Cheat sheet: which 4G LTE bands do AT&T, Verizon, T-Mobile and Sprint use in the USA?

Note: This article is being continuously updated. For , check this article.

What are the 4G LTE bands supported by AT&T in 2019? 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?

If you have ever tried to understand what's the deal with 4G LTE band support, you would have inevitably stumbled upon a reality of limitations and restrictions. Many phones, for example, only support bands for a particular ...