The MoviLine brand was used to popularize the service and hide from the end user its technical acronym TMA-900A (Automatic Mobile Telephony operating on the 900 MHz- frequency).

It was launched in 1990 (although the Moviline brand was introduced in 1993[1]) with the aim of serving a growing demand and solving the spectrum congestion problems of the current system, the TMA-450.

On the other hand, the sound quality was poor, data transmission was slow and communications were susceptible to capture by frequency scanners.

The fastest growth in subscribers occurred from the beginning of 1995 to January 1996, going from 400,000 to 900,000 and bordering on its technical limit, estimated at one million.

Subsequently, these frequencies were assigned by the CMT to Telefónica Móviles (which used it for its digital service, under the brand Movistar) and Amena, which did not have a presence in the 900 band.