Turkcell Iletisim Hizmetleri AS provides mobile telephone services in Turkey. The firm's services portfolio includes high-quality mobile and fixed voice, data, TV, and digital services over its network. The firm also operates in the Turkish Republic of Northern Cyprus, Belarus, Netherlands, and Ukraine. It has three main reportable segments, Turkcell Turkiye, Turkcell International, and Techfin. The Turkcell Turkiye segment that derives the majority of revenue comprises mainly telecommunication and technology services activities.