Telecom Regulatory Authority of India (Trai) today released its Subscription Data for December 2017 and the Top Five Telecom Operators in the country showed positive growth. State-run Telco, Bharat Sanchar Nigam Limited (BSNL) added 421,836 new subscribers in the month and retained its 100 million subscriber base too. However, MTNL lost 6561 subscribers in the month. Leading telecom operator, Bharti Airtel added just 576,575 subscribers during the month, which is rather a small number by its standards. Reliance Jio has added a whopping eight million new customers in the month, followed by Idea Cellular with 2.4 million new subscribers and Vodafone with 1.5 million.