The company, awaiting regulatory approval for its $48.5 billion proposal to buy DirecTV, sees additional cost savings of more than double than it previously forecast from the deal. AT&T also said it added 441,000 postpaid or contract subscribers and 1.2 million new wireless customers in the quarter. Shares of AT&T rose about 1.3 percent in after-hours trading. Excluding items, AT&T earned 63 cents per share, ahead of analysts’ average estimate of 62 cents, according to Thomson Reuters I/B/E/S.