4G Networks Tested: WiMAX vs. HSPA+

I've been using Xtreme Labs Speedtest measuring my iPhone's performance throughout the country on AT&T's network. I've also been using a few web sites to monitor the speed of Sprint's 3G Network.

Also of note:
Sprint's 3G Network is about 1/3rd of the speed of AT&T's. My average on Sprint is 700kbps, my average on AT&T is 2058 kbps. Very rarely do I even break 900kbps on Sprint.

Sprint's WiMax Network isn't significantly faster than T-Mobile and AT&T's 3G Network. - Right now with decent signal from AT&T on the slower 3.2mbps network I beat 4 of the WiMax scores on Sprint's network.

WiMax coverage isn't nearly as solid as HSDPA - Just because an area is "covered" doesn't mean you get a usable signal. For example, I've used Sprint's WiMax network in Charlotte, NC, and found obtaining a signal to be an ordeal inside, where AT&T and Sprint's 3G penetrated with no issues. I couldn't even crack 1mbps download on Sprint's 4G Network.