Reliance is India's second largest telecom operator headquartered in Navi Mumbai. It has over 150 million subscribers, making it the 15th largest mobile operator globally. Reliance was established in 2004 as a subsidiary of Reliance Anil Dhirubhai Ambani Group and has expanded rapidly since then. It has five business segments including wireless, broadband, global, investment, and other services. Major subsidiaries include Reliance Telecom, Reliance Tech Services, Reliance Globalcom, and Reliance IDC.