Oi S.A. Announces Annual Report Filed with the SEC on Form 20-F

RIO DE JANEIRO, April 30, 2013 /PRNewswire/ -- Oi S.A. (BOVESPA: OIBR3, OIBR4; NYSE: OIBR.C, OIBR) (the "Company") announces that its Annual Report on Form 20-F for the year ended December 31, 2012 was filed with the United States Securities and Exchange Commission, or SEC, on April 30, 2013. The report can be directly accessed at the SEC's website (www.sec.gov) or on our website (www.oi.com.br/ir).

Any investor or shareholder who wishes to receive a hard copy of the report, free of charge, may contact us by phone (+55 21 3131-2918) or by email at [email protected].

Oi S.A.
Alex Waldemar Zornig
Investor Relations Officer

SOURCE Oi S.A.

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