The problem with Sprint's advertisement of the "Nation's Largest All-Digital Network" is that it is deceptive.

True, they do in fact have the largest all-digital network that they built themselves. The problem is that you can't go off of it, onto somebody else's digital, and if you go to analog, they zap you with all sorts of fees.

Whereas, with the AT&T One Rate plan, they do have an extensive digital coverage that they built themselves, but where they don't, it will utilize a local carrier's digital network. (For example, when you are in CT, it will use SNET's digital cellular, still with no extra fees, roaming charges, or ld charges). So, in essence, you have a de-facto larger digital network than Sprint. Also, where there is no AT&T digital, no local digital, it will switch a local analog provider.

So, AT&T has the largest network usable network. Sprint's wording, although technically acurate, is extremely deceiving in any real world scenario.