AT&T INC revenue for the last year amounted to 2.55 T MXN, the most of which — 1.78 T MXN — came from its highest performing source at the moment, Communications - Mobility, the year earlier bringing 1.43 T MXN. The greatest contribution to the revenue figure was made by United States — last year it brought AT&T INC 2.44 T MXN, and the year before that — 1.99 T MXN.