Turkcell Iletisim Hizmetleri AS was incorporated in Turkey on October 5,1993. The Company is a provider of mobile services in Turkey. It provides mobile voice, broadband and other services over its mobile communications network and has developed mobile brands in Turkey. GSM, a digital standard for mobile communications, was developed in 1987 to facilitate unification and integration of mobile communications. As a digital standard, GSM offers a range of services that includes voice, circuit switched data, packet data and fax, in addition to standard service offerings such as call barring, call forwarding, call waiting and roaming into areas serviced by other GSM carriers. The Company's operations are comprised of the following operating segments: Turkcell, Euroasia and Belarusian Telecom, all of which are GSM operators in their countries and Turkcell Superonline, which provides fixed broadband services in Turkey. Other operations mainly includes its companies operating in telecommunications, betting, call center and value added services. There are currently three mobile communications operators in Turkey: Turkcell, Vodafone and Avea. The Company currently provides mobile voice, broadband and other services to subscribers throughout Turkey. Subscribers can choose between its postpaid and prepaid services. The voice services consist of GSM services on a prepaid and postpaid basis. Through Mobile Broadband service, the Company provides voice and terminal bundled offers which contains 3G enabled terminal devices such as feature phones, smartphones, 3G modems, and tablets. The Company's distribution network is composed of distributors such as, Turkcell Distribution Centers, Corporate Solution Centers, non-exclusive dealers, Turkcell Communication Centers, Turkcell Stores. All the telecommunications activities conducted by the Company in Turkey is regulated by Information and Communication Technologies Authority.