Digital Trends – The Motorola Atrix broadly attaches that 4G to its name, but its upload speeds beg to differ. Yesterday we learned that AT&T is throttling bandwidth for the phone and hasnât enabled HSUPA capabilities. In light of customer complaints, the carrier explained it was in âtesting and preparationsâ to enable the technology. But all of that apparently wonât come to fruition today, as the Atrixâs first update has begun to roll out without any signs of a HSUPA connection. To put it more simply, that 4G phone is still functioning like a 3G phone.