Telefonía Celular, the Nicaraguan unit of Spanish telecoms giant Telefónica, is a mobile telecommunication services provider. Operating under the brand name Movistar, it launched operations in Nicaragua in September 2004, taking over a client base formerly managed by BellSouth. Movistar offers voice services, enhanced calling features, international roaming, wireless internet and data services, wireless intranets and other corporate services. In 2013, Telefonica sold 40% of its assets in El Salvador, Guatemala, Nicaragua, and Panama to Corporación Multi Inversiones (CMI) but kept control of the operations through its unit, Telefónica Centroamérica Inversiones. Telefonía Celular is based in Managua, Nicaragua.