Reliance Jio is a subsidiary of Reliance Industries Ltd. that launched 4G services in India in 2016. It disrupted the market by offering free data and voice services initially. This forced competitors to lower prices. Jio has over 400 million subscribers now and helped increase India's data usage six-fold. It aims to provide broadband access across India using its extensive fiber optic network and prepare the country for 5G. The telecom industry in India faces high competition but low threat of new entrants due to high costs. Reliance Jio has strengths in technology, brand, and network but also faces challenges around competition and regulatory changes.