Over the past few months, Boygeniusreport has conducted a user submitted speed test of various cell phone networks (3G). The results are in, and are quite surprising:
Average Download Speed
Sprint: 1361kbs
AT&T: 933kbps
T-Mobile: 786kbps
Verizon: 701kbps
Average Upload Speed
Verizon: 322kbps
Sprint: 267kbps
AT&T: 180kbps
T-Mobile: 177kbps