How many different cellular service providers are there in the USA?

While there are a few dozen service providers, there are only five operators with their own wireless networks in the USA.

The Big Four:

Verizon Wireless

AT&T

T-Mobile

Sprint

Regional:

U.S. Cellular

The following providers do not have their own networks, they all piggyback on the above to provide services. They are referred to as MVNOs.

Mobile Virtual Network Operators (MVNOs).

MetroPCS - Tmobile’s Network - Probably Best Value

Boost Mobile - Sprint’s Network

Cricket Wireless - AT&T’s Network - Cheap for Talk & Text

GoogleFi - Sprint, T-Mobile, U.S. Cellular, and Three for International Roaming

US Mobile - Verizon & Tmobile’s Networks

Virgin Mobile - Sprint’s Network

Best Cellular - AT&T, Sprint, Tmobile, and Verizon

Here are a few more lesser known MVNOs.

Affinity Cellular - Verizon Network

Air Force Mobile - Verizon Network

AirVoice Wireless - AT&T

Black Wireless - AT&T

CampusSIMS - AT&T and Tmobile

CellNUVO - AT&T, Sprint, Tmobile, and Verizon

Cellular Abroad - AT&T

China Telecom Americas - Tmobile

China Unicom Americas - Tmobile

DataPass - Sprint, Tmobile, and Verizon

Link below for a complete list:

List of United States mobile virtual network operators - Wikipedia

Hope this helps!

Thanks

Khan