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AT&T CFO says sees 2% sales growth in 2013

Says on two-year track to return $40B in cash to shareholders. CFO John Stephens says mobile shared data plans have been "very successful" far, data consumption continues to grow at a very fast clip. Says "very supportive" of Windows operating system. Says "feels good" about spectrum position. Comments made at the Morgan Stanley Technology, Media & Telecom Conference.