Avea

AveA (Aria and Aycell-AandA), the sole GSM 1800 mobile operator of Turkey, was founded in 2004 and has reached a nationwide customer base of 12.8 million as of the end of 2011.

TT&TİM İletişim Hizmetleri A.Ş. was officially established on February 19, 2004 as a consequence of the merger between Aycell, Türk Telekom's GSM Operator and İş-TİM which has been established through the partnership of İş Bankası Group with a share of 51% and TİM with a share of 49%. Following the merger, for a period Aria and Aycell brands existed under TT&TİM. A totally new brand "Avea", reflecting the synergy from the merger was introduced into the market on June 23, 2004. The business name "TT&TİM İletişim Hizmetleri A.Ş" was replaced with "Avea İletişim Hizmetleri A.Ş." as of October 15, 2004.

The privatization of 55% of Türk Telekom's shares was completed in November 2005, by Oger Telecom's acquisition 55% of Türk Telekom's shares. In September 2006, Türk Telekom acquired Telecom Italia's shares of 40.6% in Avea. Turk Telekom's share is 81.37% in Avea. The remaining 18.63% of the shares belongs to İş Bankası.