Turkcell Iletisim Hizmetleri AS is engaged in establishing and operating a Global System for Mobile Communications (GSM) network in Turkey and regional states. The Company's segments include Turkcell Turkey, which includes the operations of Turkcell Superonline, Turkcell Satis ve Dagitim Hizmetleri A.S., group call center operations of Global Bilgi Pazarlama Danisma ve Cagri Servisi Hizmetleri A.S., Turktell Bilisim Servisleri A.S., Kule Hizmet ve Isletmecilik A.S., Turkcell Odeme Hizmetleri A.S. and Turkcell Gayrimenkul Hizmetleri A.S; Turkcell International, which includes the operations of Kibris Mobile Telekomunikasyon Limited Sirketi, Eastasian Consortium BV, lifecell LLC, UkrTower LLC, LLC Global Bilgi, Turkcell Europe GmbH, Lifetech LLC, Beltower LLC and Fintur Holdings BV, and Other, which comprises the information and entertainment services in Turkey and Azerbaijan, and non-group call center operations of Turkcell Global Bilgi and Turkcell Finansman AS.