Cellular South Inc., doing business as C Spire Wireless, headquartered in Ridgeland, Mississippi, is the eighth largest wireless provider in the United States. C Spire has approximately 900,000 customers in Mississippi, the Memphis Metropolitan Area, the Florida Panhandle, parts of Alabama including Mobile, and Rome, Georgia. The company also holds 700 MHz and AWS licenses covering most of Tennessee and Alabama, though it has not yet extended service to these areas. On September 20, 2011 Cellular South, Inc. filed a trademark application for the C Spire Wireless name and two days later announced that it would market its services under the C Spire Wireless brand effective September 26. C Spire Wireless is owned by the holding company Telapex, Inc^{[citation needed]}., which also owns Telepak Networks, Inc., a provider of broadband internet and phone service, as well as several smaller Mississippi telecoms.

Cellular South, Inc. began its wireless service on the Mississippi Gulf Coast on February 4, 1988, using AMPS technology. Former American football quarterback Archie Manning made the company’s inaugural call from Gulfport, Mississippi to then U.S. Representative Trent Lott in Washington, D.C.^{[dead link]}