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.Headquartered in Córdoba, Argentina, Claro was launched in Argentina, Paraguay and Uruguay on March 25, 2008 in a rebranding of CTI Móvil. As of 31 March 2007 the former served more than 12,795 million subscribers on CDMA/1XRTT and GSM/GPRS/EDGE wireless. GSM-850 (GPRS, EDGE)
850 MHz UMTS, HSPA+,1700 MHz LTE.
Movistar: Movistar is the major Spanish mobile phone operator owned by Telefónica S.A. operating in Spain and in many Latin American countries. It is the largest carrier in Spain with 22 million customers (cellphone services only) and 41.58% of market share.2 Its principal competitor in Latin America is América Móvil. It offers GSM 900/1800 MHz (Spain) 850/1900 MHz (America) (2G), UMTS900/2100 MHz (Spain) 850/900/1900/2100 MHz (America) (3G) HSDPA (3.5G) and LTE 2600 MHz (Spain) 1700/2600 MHz (America) (4G) services.The Movistar name has been in use in Spain since the launch of GSM services in 1995. The name became effective worldwide on April 5, 2005 after Telefónica Móviles purchased the BellSouth mobile operations branch in South America.GSM-850 (GPRS, EDGE),850 MHz UMTS, HSPA+,1900 MHz LTE.
CNT: Corporación Nacional de Telecomunicaciones CNT EP es la empresa pública de telecomunicaciones del Ecuador creada el 30 de octubre de 2008, opera servicios de telefonía fija local, regional e internacional, acceso a internet estándar y de alta velocidad (Dial-UP, DSL,Internet móvil 3g y 4g LTE), televisión satelital y telefonía móvil en el territorio nacional ecuatoriano. CdmaOne,CDMA2000 1x, CDMA2000 EV-DO,GSM-1900,UMTS, HSPA+,1700 MHz LTE.