Reliance Jio, founded by Mukesh Ambani and launched in 2016, transformed the telecom industry by offering free unlimited data and calling, disrupting competitors like Airtel and Vodafone. The company was initially established as Reliance Infocomm and rebranded after acquiring Infotel Broadband Services in 2013, leading to groundbreaking 4G services and a suite of digital applications. Jio's impact was further amplified by strategic branding efforts, including the involvement of celebrities and the launch of affordable handsets under the Lyf brand.