(Telecompaper) AT&T reported strong customer additions in the second quarter. At a meeting with analysts the US operator said it saw stronger U-verse broadband and TV subscriber growth versus the year-earlier quarter and added a net 500,000 postpaid mobile customers in the quarter. The mobile growth was attributed to several successful promotions in the quarter, which drove strong sales, higher gross adds and smartphone upgrade rates similar to the first quarter. As a result, the company expects second-quarter mobile EBITDA margins to be comparable to the first quarter. However, given the strong customer additions and investments in new growth opportunities, margins are expected to be down on an annual basis. AT&T also reiterated its full-year 2013 guidance provided in January, which included full-year revenue growth exceeding 2 percent. AT&T also reported strong free cash flow and an additional USD 1 billion in cash proceeds from a YP Holdings distribution (around USD 500 million) and from the sale of America Movil shares (around USD 550 million). AT&T confirmed it still holds around 9 percent in America Movil. AT&T will report its full second-quarter results on 23 July.