There are three major operators in the United States:

1. Verizon

Verizon is the largest wired communications and voice communications provider in the United States, and is also the largest Wireless communications provider, covering nearly 90% of the U.S. population and approximately 421 million users.

Verizon’s signal base stations have high density, wide signal coverage, and are not prone to call drops. Therefore, companies or businessmen with large business wireless communication requirements mostly choose Verizon to avoid call drops or inability to answer calls. Huge loss.

Network format: CDMA.

2. AT&T

The largest local and long-distance phone company in the United States and the second largest mobile operator in the United States.

AT&T is the earliest cooperative operator of iPhone and has a large number of iPhone users. AT&T's network standard is GSM, and mobile phones use SIM cards. AT&T provides fiber optic TV, home broadband, landline and mobile phone bundled services.

Network format: GSM.

3. T-Mobile

T-Mobile is the second largest GSM operator in the US market. The signal coverage rate in the United States reaches 99.5% of the population, with approximately 121 million users, making it one of the world's largest mobile companies.

In July 2019, the U.S. Department of Justice approved T-Mobile’s acquisition of Sprint, with the transaction price set at US$26.5 billion. In December 2019, the U.S. Department of Justice and the Federal Communications Commission filed an application in court to support the merger of T-Mobile and Sprint, the third and fourth largest wireless operators in the United States.

Network format: GSM.

Extended information:

Other communications operators in the United States:

Sprint:

Sprint Corporation is a telecommunications company in the United States, Puerto Rico, and A holding company that operates wireline and wireless communications in the Virgin Islands. It is a global Internet backbone network service provider and the third largest long-distance phone company in the United States. As of 2011, Sprint's wireless network users reached 55 million. In 2019, Sprint was acquired by T-Mobile.

Network format: CDMA.

TracFone Wireless:

According to TracFone’s official website, TracFone is the largest no-contract mobile phone provider in the United States, providing services to more than 250,000 users. Its most famous package is Straight Talk. Network format: GSM & WCDMA