Telecom major Bharti Airtel on Wednesday said that it will invest Rs 25,000 crore this fiscal year to expand 4G network in the country. The company has increased its spending by Rs 5,000 crore from its earlier budget. Airtel's latest push on 4G expansion has come in the backdrop of recent data explosion triggered by Reliance Jio. Bharti Airtel MD and CEO for India and South Asia Gopal Vittal believes that in next 3-4 years the company is likely ...