Laptop Magazine has taken a look at the customer support service for the four largest mobile carriers, finding that T-Mobile offered the best service while AT&T offered the worst.
Source: http://bx.businessweek.com/customer-service/wireless-carrier-customer-service-compared—t-mobile-best-att-worst-though-test-isnt-particularly-broad/6945357056930536459-acdf70952c66eaad1195433b4f620bf0/
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