The all-India total of GSM cellular subscribers stood at 688.02 million in November, data released here by Cellular Operators' Association of India (COAI) said Monday.
The GSM subscribers increased by 4.87 million in November 2013 -- a 0.71 percent increase over the previous month.
Telecommunications service provider Bharti Airtel has the highest number of subscribers with 196.60 million. It was followed by Vodafone, Idea Cellular and BSNL, respectively.