Oi S.A. (OIBR-C) operates as a leading telecommunications provider in Brazil, offering fixed-line and mobile telephony services; broadband internet access; pay television; and data transmission solutions to residential, small and medium-sized business, and corporate customers. The company provides its services through its own network infrastructure, including fiber optic cables and mobile towers, primarily under the Oi brand, with a focus on the Brazilian market where it maintains nationwide operations. Founded in 1998 as Telemar and headquartered in Rio de Janeiro, Brazil, Oi S.A. serves as a key player in the competitive telecom sector alongside rivals such as Vivo, Claro, and TIM. [web:previous]
In recent developments, Oi S.A. completed the sale of its mobile assets to a consortium led by TIM Brasil, Claro, and Vivo in early 2024, marking a significant restructuring that allows the company to exit the mobile market and concentrate on its fixed broadband and enterprise services businesses. This transaction, approved by Brazil's antitrust authority CADE, generated substantial proceeds used for debt reduction amid ongoing judicial reorganization proceedings initiated in 2016. Additionally, Oi launched expansions in its fiber-to-the-home (FTTH) network during 2024-2025, targeting underserved regions in Brazil to bolster its ultra-broadband offerings and support digital transformation for business clients. [web:previous]