promote a 4G service (under LTE Band 4/1700 MHz), but the other player in the market, Iusacell, uses simply HSPA+ instead of LTE. Telcel currently offers 4G LTE service in 9 Cities in Mexico. And by the first trimester of 2013, it is going to expand its 4G LTE service, to cover a total of 26 cities in the country. It is expected that by the end of 2013, Telcel's 4G LTE Network will become a nationwide 4G LTE Network. covering more than 80% of the population. With the addition of 4G LTE Telcel now offers a wide variety of technologies including: TDMA, GSM, GPRS, EDGE, UMTS, HSDPA, HSPA+ & LTE. These technologies are branded as: 2G (GPRS, EDGE), 3G (UMTS, HSDPA), 3.5G (HSPA+), 4G (LTE) & 4.5G (LTE-A). Radio frequency spectrum chart Criticism Telcel's commercial and monopolistic practices have earned a great deal of criticism among the industry and the company has received a large number of customer service complaints on consumer websites in Mexico. Humanitarian causes and charities In 2012, Telcel is listed as a partner of the (RED) campaign, together with other brands such as Nike Inc., Girl, American Express, and Converse. The campaign's mission is to prevent the transmission of the HIV virus from mother to child by 2015 (the campaign's byline is "Fighting For An AIDS Free Generation". References External links Telcel top up in English Territorio Azul Telcel Reg 1 site in Spanish América Móvil Ideas Telcel Atención a Clientes en Línea Círculo Azul Telcel Eventos Telcel Mexican Consumer Protection Bureau (PROFECO) América Móvil Mobile phone companies of Mexico Mexican companies established in 1984