The Telecommunication Company of Iran (TCI) is the largest telecommunications provider in Iran, established in 1857. It offers a wide range of services, including fixed-line and mobile telephony, internet services, and data transmission. TCI plays a crucial role in the country's communication infrastructure. As a state-owned enterprise, TCI operates under the supervision of the Ministry of Information and Communications Technology. The company has expanded its services to include 3G and 4G mobile networks, aiming to enhance connectivity and digital access for millions of Iranians.