Jio, a subsidiary of Reliance Industries, started operations in 2015. Being the first 4G LTE network, the company started offering unlimited data to early adopters.

Back then, most users used to pay at least Rs 250 for data calls and 3G/4G voice was also expensive. Today, for the same price, most telecom operators offer 1 GB of 4G data per day with free voice calls and SMS.

One of the obstacles Jio faced, unlike other network operators, is that it only works with 4G compatible smartphones.

In some cases, even if the phone supported 4G, it required a special app to make voice calls, as some smartphones did not support VoLTE technology, which is used to make voice and video calls. No one in the market thought that with a 4G-only network, Jio could succeed in India, and the results proved them wrong.

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