Turkcell Iletisim Hizmetleri A.S., together with its subsidiaries, engages in establishing and operating a global system for mobile communications (GSM) network in Turkey, Belarus, Turkish Republic of Northern Cyprus, Germany, and the Netherlands. It operates through the Turkcell Turkiye, Turkcell International, and Techfin segments. The company is involved in information technology, value added GSM, and entertainment investment, as well as research and development, digital and insurance agency, property investments, electricity energy trade, and wholesale and retail electricity sales activities. It also provides telecommunications, television, and content; digitalization; sales, delivery, and digital sales; consumer financing; cloud solutions; online radio, television, and on-demand streaming; telecommunications infrastructure; electronic payment; and develop software products and services. In addition, the company offers customer relations and human resources management; directory assistance; payment services and e-money; internet search engine and browser; venture capital investment fund; meal coupons and cards; data processing; data center and cloud; programming and technical support; and digital education services. Further, it provides training software developers. Turkcell Iletisim Hizmetleri A.S. was incorporated in 1993 and is headquartered in Istanbul, Turkey.