AT&T is suing Verizon over a snarky campaign that compares Verizon's 3G coverage to AT&T's: Is this unfair? It's maybe impolite, but it doesn't appear unfair or incorrect. Is it actionable? AT&T says the ads will make customers believe AT&T has no coverage whatsoever, not just no 3G data coverage, in the white areas in the AT&T map displayed. And the map is from a few months ago, while AT&T has built out a bit more blue in that time. (AT&T isn't complaining about the accuracy of the map's depiction of 3G.)

Fundamentally, though, we're seeing a battle between the last advantages of the Qualcomm EVDO standard compared to the GSM evolved HSPA family of standards. When Verizon installed 3G, the company did it in a big way, upgrading a large majority of its 2G 1xRTT nodes to EVDO Rev. 0, and later pushing those to Rev. A for the current footprint and speed. Sprint did likewise.

Verizon had to, because AT&T and T-Mobile had intermediate 2.5G and 3G steps that would have left Sprint and Verizon at a competitive disadvantage. AT&T and T-Mobile pushed out EDGE, which is