The Brazilian mobile market has undergone huge changes since 1998. In that year, the first 12 mobile operators emerged from the privatisation of state-owned Telebrás, and telecom regulator Anatel auctioned mobile licences for another 10 companies. Over the following decade, a process of consolidation gradually reduced the number of market players. Portugal Telecom (PT) and Telefónica merged their operations in October 2002 to create the largest mobile company in Brazil: a 50:50 joint venture named Brasilcel. With commercial launch in April 2003, Brasilcel adopted the tradename Vivo. This report provides background information for the more regularly updated Brazil – Mobile Operators. As such, it covers details on the history and development of Brazil’s fixed-line market and telecom infrastructure that are absent from the more up-to-date report, but it does not contain forecasts or statistics.