Though it really came to a head with the recently-launched Inspire 4G, users have noticed that there really aren't many phones in AT&T's stable that deliver stellar upload speeds -- the Atrix 4G is suffering the same sub-megabit performance, as are older devices that should seemingly support HSUPA like the Samsung Captivate.
We've chatted in the past few days with a source who offers an interesting explanation: AT&T currently requires that all handsets "
