"Expenditure on voice has been steadily decreasing from 2013; and with the popularity of VOIP (Voice over Internet Protocol) and video chatting, the expenditure on voice services has decreased drastically in recent times," the report said.
"This, in turn, means that there is a rise in the proportion of data expenditure in comparison to voice (services) expenditures for most users," it added.
It said: "Urban India witnessed an estimated 18.64 percent year-on-year rise, while rural India witnessed an estimated growth of 15.03 percent during the same period (December 2016 to December 2017)."
The report estimates that there are 291 million urban mobile Internet users and 187 million rural users as of December 2017.
The study, however, predicts a slowdown in Internet penetration in urban India with 59 percent penetration already taken place, while with 18 percent mobile Internet penetration in rural India, growth is expected in the rural areas in the days ahead.
"Going forward, NTP (National Telecom Policy) 2018 with focus on new technologies like 5G is expected to promote better quality data services at more affordable prices and can be expected to help address the digital divides and promote internet penetration in the rural areas via mobile internet," the report said.
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