Mobile phone customers get connected Cingular Wireless marked the completion of its \$41 billion takeover of AT amp;T Wireless Services Inc. by immediately expanding unlimited mobile-to-mobile calling between the two networks. Subscribers of the original Cingular and AT amp;T Wireless who have had plans that gave them unlimited calls to fellow subscribers now also get free unlimited calls to subscribers of the other carrier. Cingular is now ... 

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