Experts feel that 2G technology is likely to remain mainstream in India at least for the next two-three years as a good number of people still use it, particularly those who can't afford a smartphone. As per industry data, around 50 million 2G phones are sold in a year while there are over 500,000 2G base tower stations in the country, majority owned by Bharti Airtel, followed by Vodafone Idea and state-run BSNL/MTNL.
