Free 4G for a month! BSNL’s Diwali offer gives unlimited calls, 2GB data daily to new subscribers

State-owned telecom company BSNL has rolled out a special one-month free 4G service offer for new customers, starting from October 15 until November 15, 2025. Under this Diwali Bonanza, new subscribers will need to pay only a token amount of Re 1 to enjoy the 4G service for the entire month.