During its recent fourth quarter, for example, AT&T added 2.1 million wireless subscribers to reach a total customer base of 77 million, 7 million more than the same period last year.

Whereas the Blackberry Storm is the jewel in Verizon's crown, AT&T continues to champion the iPhone, and is even rumored to be offering iPhones without mandatory two-year service contracts. The telecom firm is also waiving activation fees, according to company communications obtained by BoyGeniusReport.

AT&T shares fell 84 cents, or 3.2%, to close at $25.16 Monday.

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