AT&T Once Again Named Worst-Rated Carrier in U.S.

Consumer Reports has released its annual carrier ratings, which sees AT&T landing in last place for the second consecutive year.

Verizon Wireless, who earned marks on voice and data, was named the highest-rated major carrier, while Consumer Cellular took the top spot. AT&T, meanwhile, was only praised for its 4G LTE network -- the firm is investing billions in upgrading its wireless networks.

"While delivering an even better customer experience is a never-ending job, we're pleased that our customers rate their 4G experience as best of any carrier," a spokesperson told Cnet. "We've invested significantly to deliver unique advantages, including offering the nation's largest 4G network, which enables the fastest iPhone 5 downloads and simultaneous talk and surf."

The ranking of the seven carriers reviewed, from highest to lowest rating, is as follows:

1. Consumer Cellular
2. U.S. Cellular
3. Credo Mobile
4. Verizon Wireless
5. Sprint
6. T-Mobile USA
7. AT&T

Consumer Cellular and Credo operate as mobile virtual network operators (MVNOs) that relies on other carriers' networks to provide service to its users. Oddly enough, first place Consumer Cellular relies on AT&T's network, while Credo utilizes Sprint's network.

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