Verizon is a world-leading communications solutions service provider, formed from the merger of BellAtlantic and GTE. It is the largest wireless communications company and local telephone company in the United States, and the largest 4GLTE wireless network provider, with 150 customers worldwide. Provide comprehensive communication solutions to customers in multiple countries and regions.

AT&T (American Telephone & Telegraph) is the largest local and long-distance telephone company in the United States. Founded in 1877, it is one of the world's top 500 companies. Its main businesses include telephone, television, and mobile communications.