AT&T CUSTOMER SERVICE NUMBER

It is the largest wireless carrier in the United States and the world’s fourth-largest telecommunications company by revenue. As of 2023, AT&T was ranked 13th on the Fortune 500 rankings of the largest United States corporations, with revenues of $120.7 billion. During most of the 20th century, AT&T had a monopoly on phone service in the United States. The company was founded as the American District Telegraph Company in St.