RADIOMÓVIL DIPSA, S.A. DE C.V., doing business as Telcel, is a Mexican wireless telecommunications company, owned by América Móvil, founded in 1984 and based in Mexico City. Telcel holds concessions to operate a wireless network in all nine geographic regions in Mexico using both the 850 megahertz and 1900 megahertz radio spectrum.

In June 1926, the company Publicidad Turística S.A. was founded, as a subsidiary of Teléfonos de México. Its main activity was the commercialization of phone directories (white section and Yellow Section).

In September 1954, he changed his company name to that of "Professional Directories" (DIPSA), since he began to specialize in the edition of the blue directory by streets, construction directory, tourism and others. During the same year and due to the modernization of telecommunications, Teléfonos de México integrates DIPSA in the administration of Mobile Radiotelephony.

In 1981, the Secretariat of Communications and Transport (SCT) was asked for a concession to install and operate a mobile radiotelephony system known as mobile radiotelephony (telephone in the car).

In 1984, the concession was obtained to operate the mobile radiotelephony service network in Mexico City, under the name of Radiomovil DIPSA S.A de C.V.

In 1989, the Telcel brand was created, starting operations in Mexico City.

In 1996, the company launched the Amigo system, the first prepaid system in America and the world.

In 2002, Telcel implemented the GSM network and Value-Added services under the Ideas Telcel concept.