Jio

Reliance Jio Infocomm Limited or Jio is an LTE mobile network operator in India. It is a wholly owned subsidiary of Reliance Industries headquartered in Navi Mumbai, Maharashtra that provides wireless 4G LTE service network (without 2G/3G-based services) and is the only 'VoLTE-only' (voice over LTE) operator in the country which lacks legacy network support of 2G and 3G, with coverage across all 22 telecom circles in India.[2][3]

The services were first beta-launched to Jio's partners and employees on 27 December 2015 on the eve of 83rd birth anniversary of late Dhirubhai Ambani, founder of Reliance Industries,[4][5] and later services were commercially launched on 5th September 2016.