PHAROL, SGPS, S.A.

Related Party Transaction • Mar 10, 2016

Announcement | Lisbon | 10 March 2016

Material fact disclosed by Oi

PHAROL, SGPS S.A. hereby informs on the Material fact disclosed by Oi, S.A., according to the company's announcement attached hereto.

PHAROL, SGPS S.A.

Public company Share capital Euro 26,895,375 Registered in the Commercial Registry Office of Lisbon and Corporation no. 503 215 058

PHAROL is listed on the Euronext (PHR). Information may be accessed on Bloomberg under the symbol PHR PL.

Luis Sousa de Macedo Investor Relations Director ir@pharol.pt Tel.: +351 212 697 698 Fax: +351 212 697 949

Oi S.A. Corporate Taxpayers' Registry (CNPJ/MF) No. 76.535.764/0001-43 Board of Trade (NIRE) No. 33.300.29520-8 Public-Held Company

MATERIAL FACT

Oi S.A. ("Oi"), in accordance with Art. 157, paragraph 4 of Law No. 6,404/76, hereby notifies its shareholders and the market in general that it has retained PJT Partners as financial advisor to assist Oi in evaluating financial and strategic alternatives to optimize its liquidity and debt profile. Oi's operational and commercial focus remains unchanged.

Our customers remain our top priority. Oi is committed to continuing to make investments with the goal of permanently improving its quality of service, which it believes will allow it to continue to bring technological advances to its customers throughout Brazil. Oi continues to undertake efforts towards operational improvements and business transformation focusing on austerity, infrastructure optimization, revisions of procedures and commercial actions.

Rio de Janeiro, March 9, 2016.

Flavio Nicolay Guimarães Chief Financial Officer and Investor Relations Officer Oi S.A.

Special Note Regarding Forward-Looking Statements:

This communication contains forward-looking statements within the meaning of the U.S. Private Securities Litigation Reform Act of 1995 and Brazilian applicable regulation. Statements that are not historical facts, including statements regarding the beliefs and expectations of Oi, business strategies, future synergies and cost savings, future costs and future liquidity are forward-looking statements. The words "will," "may," "should," "could," "anticipates," "intends," "believes," "estimates," "expects," "forecasts," "plans," "targets," "goal" and similar expressions, as they relate to Oi or its management, are intended to identify forward-looking statements. There is no guarantee that the expected events, tendencies or expected results will actually occur. Such

statements reflect the current views of management Oi and are subject to a number of risks and uncertainties. These statements are based on many assumptions and factors, including general economic and market conditions, industry conditions, corporate approvals, operational factors and other factors. Any changes in such assumptions or factors could cause actual results to differ materially from current expectations. All forward-looking statements attributable to Oi or its affiliates, or persons acting on their behalf, are expressly qualified in their entirety by the cautionary statements set forth in this paragraph. Undue reliance should not be placed on such statements. Forwardlooking statements speak only as of the date they are made. Except as required under the Brazilian and U.S. federal securities laws and the rules and regulations of the CVM, the SEC or of regulatory authorities in other applicable jurisdictions Oi and its affiliates do not have any intention or obligation to update or to publicly announce the results of any revisions to any of the forward-looking statements to reflect actual results, future events or developments, changes in assumptions or changes in other factors affecting the forward-looking statements. You are advised, however, to consult any further disclosures Oi makes on related subjects in reports and communications that Oi files with the SEC.