NOTICE TO THE MARKET
Spectrum Acquisition in 4G Auction

Oi hereby informs the market that it acquired, today, at an auction held by Anatel, one of the nationwide lots to operate 4G mobile telephony in the 2.5 GHz frequency band (FDD), in the 10+10 MHz range. The lot also included the 450 MHz band for the Midwest and the state of Rio Grande do Sul, geared towards voice and data services in rural areas.

The winning bid was R$330.9 million - a premium of 5% above the minimum price - the lowest among the national coverage lots in the 2.5 GHz band. This result underlined the Company’s commitment to offering an extensive portfolio of services for its clients and creating value for its shareholders.

The acquisition is in line with the Company’s business plan, which envisages total investments of R$24 billion through 2015, R$6 billion of which in 2012 alone. More than half of this figure will go towards expanding broadband infrastructure, including increasing capacity and velocity, expanding coverage, reinforcing the transportation network and introducing new services, thereby strengthening ample broadband access for its clients via FTTH, Wi-Fi, 3G and 4G.

Oi will continue participating in the regional auctions and, as soon as this phase is concluded, we shall inform the market of the final result of the auction.

Rio de Janeiro, June 13, 2012.

Alex Waldemar Zornig
Investor Relations Officer

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