Portugal Telecom SGPS SA operates in the Radiotelephone communications sector. Portugal Telecom SGPS SA. Portugal Telecom SGPS SA (Portugal Telecom) is a Portugal-based telecommunications operator. Together with its subsidiaries, it is engaged in rendering a range of telecommunications and multimedia services in Portugal and other countries or regions, including Brazil and Africa. The Company's activity covers the fixed, mobile, multimedia, data and corporate solutions segments of the telecommunications sector. In Portugal, fixed line services are rendered by PT Comunicacoes SA, which also renders Pay-TV services through a number of platforms and acts as an Internet Service Provider (ISP). Data transmission services are rendered by PT Prime - Solucoes Empresariais de Telecomunicacoes e Sistemas SA. Mobile services in Portugal are offered by TMN - Telecomunicacoes Moveis Nacionais (TMN). In Africa, the Company's activities are developed mainly through Africatel Holding BV (Africatel). In the Brazilian market, Portugal Telecom's presence extends to Dedic and Mobitel. In our complete report available for purchase the company is compared to: Mobile Telesystems OJSC, Turkcell Iletisim Hizmetleri AS and Freenet AG.