management and more than 2,700 employees. Having roaming agreements with 656 operators in 201 countries, the company continues to expand its roaming partnerships. Being a merger of two networks, Avea suffers from the heterogeneity of roaming partners and customers with numbers beginning with 50 and 55 don't have the same list of roaming partners (see the list of roaming partners for 505 customers and the list of roaming partners for 555 customers for the different partners' lists). Avea also offers GPRS / EDGE / 3G roaming in multiple countries (see the list of GPRS roaming partners for 505 customers and the list of GPRS roaming partners for 555 customers). Competitiveness As the latest participant in the Turkish GSM sector, Aria, Aycell and Avea have been obliged to offer lower prices to attract a maximum number of customers. Consequently, Turkcell (the leader of the Turkish GSM market) has lowered down its intra-network call rates by a third after the creation of Aria, and halved all call rates when Avea has been launched. See also List of companies of Turkey References Avea Turkish companies established in 2004 Companies based in Istanbul Turkish brands Telecommunications companies established in 2004 Telecommunications companies of Turkey