Oi Head Office
Rua do Lavradio, 71, 2º andar,
Rio de Janeiro, Brazil
Phone: 55-21-31311208
Oi Customer Service
Phone: 144 or 1057 (general)
Phone: 103 31 (Oi Fixo/Oi Velox)
Phone: 106 31 (Oi TV)
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About Oi
Oi is one of the leading telecommunications company in Brazil, offering fixedline, mobile, internet and TV services. Oi began operations in Brazil as Telemar in the year 1998. The company leads in the prepaid market and boasts of a nationwide presence. As of 2014, Oi had close to 74.5 million subscribers, with about 17.5 million telephony, broadband and Pay TV users, 41.3 prepaid users, 7.1 million postpaid users and 7.9 million in the corporate segment.
The fixed telephony services covers both local and long distance services. Being one of the largest fixed telephony companies in South America, it is no surprise that in 2014 Oi had 15.8 million fixed lines in operation. Towards mobile, prepaid users have a variant of sim cards suiting a budget and feature. Recharge of same can be done online or at any retail store. Postpaid users can access their bill online, make the payment via credit card and enjoy a range of other benefits such as voice mail, call transfer, caller ID, conference call and call waiting.
As for broadband, Oi uses ADSL technology to provide data and voice transmission services. In addition to that, since 2009, Oi also has Pay TV services with a range of packages. If you dint know, purchases of smartphones, tablets and other products can be made on the Oi website, with pre-installed subscription. For more details on the products, store locations, or others, speak to a Oi customer service representative.
