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 strea…