Full interview with AT&T CEO on Q1 earnings beat, HBO Max, 5G and more

AT&T reported quarterly earnings of 86 cents per share, 8 cents a share above estimates. Revenue also came in above forecasts and AT&T added more wireless customers during the quarter than analysts had anticipated. The stock rose about 3.5% in premarket trading. AT&T CEO John Stankey joined "Squawk Box" on Thursday to discuss the results.