(Telecompaper) AT&T reported a further fall in revenues from its communications business in the fourth quarter, as it lost customers across postpaid mobile, fixed voice and TV activities in the past year. Operating profit still improved, thanks to cost reductions, and overall group results were up following the growth at WarnerMedia and acquisitions. AT&T confirmed its outlook for 2019, as it looks to use the content and advertising business to restore growth in its telecom operations.