Even though it has USA in the name, Grupo Iusacell only offers cell phone service south of the border. The company has about 4 million subscribers in Mexico where the market is dominated by América Móvil. Grupo Iusacell provides cellular service across the country; it also offers local and long-distance telephone and Internet service. The company has operated the Unefon brand since 2007. Grupo Iusacell is owned by Grupo Salinas, the conglomerate founded by Ricardo Salinas Pliego, one of Mexico's wealthiest men. The company traces its roots back to 1955, when it was founded as Servicio Organizado Secretarial S.A. de C.V. (SOS).