Atlanta is one of a handful of cities with 4G wireless service already available. This first salvo in the race to 4G is an implementation of WiMAX, which claims speeds comparable to Wi-Fi over much larger areas. I have been using 4G service for about two months now, and on the whole I'm impressed with it, but there are certainly some gotchas in comparison to using 3G cellular data service.
The WiMAX network was developed by Sprint and Clearwire with funding from industry heavy-hitters like Intel, Comcast, and Google. As such, there are several different vendors for WiMAX service, but they're all using the same network. I'm using Clearwire's CLEAR service, but as far as I know, there shouldn't be any performance difference between it and Sprint's 3G/4G service or Comcast's High-Speed 2Go.
Read the rest of this post at the ThreeSpace Blog.