Reliance Industries chief Mukesh Ambani today announced the full-scale launch of its telecom venture 'Reliance Jio', during the company's 42nd annual general meeting. Stating it to be the "biggest investment in the history" of Reliance Industries, Mukesh Ambani said, Jio is the largest only 4G long-term evolution network in the world. Reliance Jio will start operations from September 5.