(credit: Consumer Cellular)

T-Mobile USA earned the highest score among the four major nationwide carriers in the latest Consumer Reports ranking of cellular service providers. But the gaps between T-Mobile, Verizon Wireless, AT&T, and Sprint weren't very large, as the big four all lagged far behind the smallest carriers in customer satisfaction.

Consumer Cellular came in first place out of 10 postpaid carriers with an overall score of 89 out of 100, followed by Ting, which scored 88. The next four carriers were GreatCall/Jitterbug, Credo Mobile, Virgin Mobile, and US Cellular, which all scored in the 70s.

The big four occupied the bottom four slots. T-Mobile scored 73, followed by Verizon at 70, AT&T at 68, and Sprint at 67.

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