Tigo: Millicom is an international telecommunications and media company. It offers a range of digital services to more than 63 million customers primarily under the Tigo brand in fourteen markets in Africa and Hispanic America. Its online partnerships are active in more than 40 markets. Millicom was one of the earliest pioneers of mass consumer mobile telephony and was formed in 1990 when Millicom Incorporated merged with the Swedish investment company Industri forvaltnings AP Kinnevik. Since then, the firm has seen annual revenue grow to $7.2billion, driven mainly by mobile phone services and, increasingly, by data, with an expanding portfolio of cable, satellite, broadband, e-commerce, Mobile Financial Services, B2B and other media.GSM-850/1900 (GPRS, EDGE),850 MHz UMTS, HSDPA,1700 MHz LTE.
Personal: Telecom Argentina is the major local telephone company for the northern part of Argentina, including the whole of the city of Buenos Aires. Briefly known as Sociedad Licenciataria Norte S.A., it quickly changed its name, and is usually known as simply Telecom within Argentina.Telecom Argentina’s local telephone market, together with Telefónica de Argentina in the southern part of the country, was part of a duopoly until October 8, 1999. Telecom also operates mobile phone service Personal and Internet service provider Arnet. GSM-850 (GPRS, GE),850/1900 MHz UMTS, DC-HSPA+, 1900 MHz LTE.
Claro: Claro Americas is part of América Móvil, a Mexican telecom group serving clients in Argentina, Brazil, Chile, Colombia, Costa Rica, the Dominican Republic, Ecuador, El Salvador, Guatemala, Honduras, Nicaragua, Panama,Paraguay, Peru, Puerto Rico, Uruguay. The company’s name means “bright”, “clear” or “of course” in Portuguese and Spanish. GSM-1900 (GPRS, EDGE),1900 MHz UMTS, HSPA+
1700 MHz LTE.
Vox: GSM-850/1900 (GPRS, EDGE),900 MHz UMTS, HSPA+,1700 MHz LTE