J.D. Power and Associates has given T-Mobile the highest ranking in wireless retail customer satisfaction among the major U.S. carriers. The “2010 Wireless Retail Sales Satisfaction Study â Volume 1” reports that T-Mobile edged out Verizon Wireless, Sprint, and AT&T in the retail study with an overall score of 723; Verizon had an overall score of 722. The categories considered were: overall retail sales performance, retailer’s facility, merchandise display, sales staff, and cost. The study did not take into account how satisfied people were with the quality of their wireless network or phone selection, just the retail experience itself. Congrats to T-Mo on their second consecutive victory. We’ve got the official press release all queued up for you.