Biritiba Mirim is a Brazilian municipality of the state of São Paulo. It is part of the Metropolitan Region of São Paulo. The population is 32,936 (2020 est.) in an area of . Its limits are Guararema in the north, Salesópolis in the east, Bertioga to the south and Mogi das Cruzes in the west and northwest.
In telecommunications, the city was served by until 1973, when it began to be served by . In July 1998, this company was acquired by Telefónica, which adopted the Vivo brand in 2012.
The company is currently an operator of cell phones, fixed lines, internet (fiber optics/4G) and television (satellite and cable).