Oi SA
Oi SA (OIBZQ) is a Brazilian telecommunications company that provides a wide range of services, including fixed-line and mobile telephony, broadband, and pay television. The company operates primarily in Brazil and offers its services to residential, corporate, and government clients. Oi is known for its comprehensive telecommunications solutions, including voice services, data transmission, and value-added services, catering to the growing demand for connectivity in an increasingly digital world.