Private telcos lose customers in first half of this year, BSNL gains subscribers on monthly basis
State-owned telecom company Bharat Sanchar Nigam Limited (BSNL) has grown its subscriber base over first half of this financial year (April to September) at the cost of private players including Bharti Airtel (Airtel), Reliance Jio (Jio) and Vodafone-Idea …