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%.