Brazil

Algar Telecom is a Brazilian telecommunications company, currently operating in multiple states including Goiás, Mato Grosso do Sul, Minas Gerais, Paraná, Rio de Janeiro, Rio Grande do Sul, Santa Catarina, São Paulo, and the Federal District. The company was founded as Companhia Telefônica da Borda do Campo (CTBC) on February 15, 1954, by Alexandrino Garcia in Uberlândia, State of Minas Gerais. Garcia acquired Companhia Telefônica Teixeirinha to start his venture in the telephony industry. The company initially focused on the rural regions of Central Brazil, later expanding to other regions...

Claro SA, trading as Claro Brasil, was launched in 2003 following a merger between América Móvil-owned operators ATL, BCP, Americel, Tess Celular, and Claro Digital who previously served mutually exclusive regions, to form a single nationwide mobile carrier. The company is a fully owned subsidiary of Claro Telecom Participações SA, a group holding company designed to oversee operations of its Brazilian cellular, fixed, and ISP service companies. Claro Telecom itself is a subsidiary of América Móvil S.A.B. de C.V, an international telecommunications group with operations in a range of countries...

Oi, previously known as Telemar, is the largest fixed telephone operator and the fourth largest mobile telephone operator in Brazil. The firm was established as Tele Norte Leste in 1998 during the privatisation of the Brazilian telecommunications system, merging sixteen state-owned incumbent local exchange carriers. The states that formed the base of Telemar were predominantly in the northern, northeastern and southeastern parts of the country, covering 65% of the Brazilian territory and 20 million households. The company was sold to a consortium led by the Brazilian construction firm Andrade...

Sercomtel is a Brazilian telecommunications company that provides fixed and mobile telephony, data transmission, and internet services. The company was established in 1968 in the city of Londrina, in the state of Paraná. Sercomtel is a mixed capital corporation, with the majority of its shares owned by the Municipality of Londrina and the minority stake held by the State of Paraná. The company is one of the few in Brazil that still maintains public and private capital, and it operates primarily in the states of Paraná and Santa Catarina.

TIM Brasil Serviços e Participações S.A., more commonly known as TIM Brasil, is a telecommunications company operating in Brazil. It is a subsidiary of Telecom Italia Finance S.A. The company was established in 1995 and commenced its commercial operations in 1998. TIM Brasil has, since 2002, expanded its presence nationally, making it the first mobile phone operator to be present in all Brazilian states. The company provides services in mobile and fixed telephony, as well as data transmission and high-speed internet access. Its headquarters is located in Rio de Janeiro. The company is listed...

Vivo, known as Vivo Brazil, is a telecommunications brand operating in Brazil. It is a subsidiary of Telefónica Brasil, which in turn is a subsidiary of the global telecommunications company, Telefónica. Vivo's headquarters are located in the Brooklin Novo neighbourhood of São Paulo. The company's origins trace back to Telebrás, a state-owned telecom monopoly. In 1998, Telebrás was demerged and privatised, with Telefónica acquiring Telesp, the São Paulo division. This division was rebranded to Telefónica, and then subsequently rebranded to Vivo on 15 April 2012. Vivo was officially launched...