TIM Participacoes S.A., through its subsidiaries, provides mobile telecommunications services using digital technologies to business and individual customers in Brazil. The company offers mobile, fixed and long distance telephony, data transmission and Internet services. It provides prepaid and post paid services, as well as offers various value-added services, including short message services or text messaging, multimedia messaging services, push-mail, Blackberry services, video call, turbo mail, WAP downloads, Web browsing, business data solutions, songs, games, TV access, voice mail, conference calling, chats, and other content and services. The company also provides interconnection services to fixed line and mobile service providers. Further, it offers co-billing services to other telecommunication service providers; sells various mobile handsets through its dealer network, which includes its own stores, exclusive franchises, authorized dealers, and department stores. As of December 31, 2011, it served a subscriber base of 64.1 million clients; and marketed through a distribution network of approximately 9,296 points of sale, which include approximately 81 company owned stores, as well as had 445 thousand recharging points for prepaid services. The company TIM Participacoes was formerly known as Tele Celular Sul Participações S.A. and changed its name to TIM Participacoes S.A. in August 2004. The company was founded in 1998 and is headquartered in Rio de Janeiro, Brazil. TIM Participacoes S.A. is a subsidiary of TIM Brasil Serviços e Participações S.A.