Interestingly enough this report comes after AT&T has stated repeatedly they are doing everything to handle iPhone network issues. In response to criticism about AT&T’s experience in dealing with iPhone traffic, AT&T CTO John Donovan told The Wall Street Journal, AT&T “is managing volumes that no one else has experienced.” So much for that statement.

In 2009, AT&T’s network issues may have led some to conclude that its network was carrying the most data traffic. But according to ABI Research, Verizon Wireless carried the most, followed by Sprint. Customers of these two operators generated 63% of the US market’s mobile network data traffic.

Source:
AT&T’s Mobile Network Comes in 3rd for Most Data Transfered in 2009