Idea Cellular is now India’s thrid largest GSM mobile operator. Idea Cellular (55.9 million customers) has overtaken BSNL (55.2 million), based on the November figures from the Cellular Operators Association of India. The GSM industry as a whole added 11 million subscribers to take the countrywide tally to 366 million.
Bhart Airtel remains as the fastest growing operator with more than 116 millio customers. Vodafone the second largest mobile operator in India with 88.6 million customers. Aircel is in fifth place with 29.4 million, followed by Reliance Telecom (14.6 million), MTNL (4.5 million) and Loop Mobile (3 million). [source]