According to the Cellular Operators Association of India (COAI), the total GSM subscriber base grew by 0.58 per cent, from 716.24 million subscribers at the end-May 2015 to 720.38 million subscribers in end-June 2015.

Bharti Airtel maintained leadership with maximum subscriber base of 230.66 million. In terms of net addition of new customers, Idea Cellular added 1.62 million new customers in June 2015, the highest among the GSM telecom operators. Idea was followed by Airtel which added 1.22 million new customers. Meanwhile, Uninor witnessed an addition of 0.42 million subscribers and Vodafone added only 0.39 million subscribers during the given period. Aircel added 0.30 million subscribers in June 2015.

Videocon added 0.15 million new subscribers while Mahanagar Telephone Nigam Limited added 0.02 million new customers in June 2015.

Bihar and Jharkhand added 0.81 million subscribers, highest among all 22 telecom circles, and Uttar Pradesh (East) was the circle with maximum number of GSM subscribers as of end-June 2015.