"All India GSM cellular subscriber figures as of March stood at 705.2 million. The GSM subscribers increased by 8.19 million in March, a 1.17 percent increase from previous month," Cellular Operators Association of India (COAI) said.
The GSM subscriber base stood at 697 million at the end of February.
COAI - which represents telecom players like Bharti Airtel, Vodafone, Idea Cellular and Aircel - said the data does not include GSM subscriber numbers of Reliance Communications and Tata Teleservices. It has also stopped reporting the GSM numbers of state-run BSNL.
Reliance Jio Infocomm had also joined the body but the company is yet to start telecom services.
Country's largest telecom operator Bharti Airtel added 2.897 million subscribers to take its overall base to 226 million during the month.
Idea Cellular added 2.354 million users and its base stood at 157.8 million whereas Vodafone added 1.358 million subscribers to take its base to 183.8 million at the end of March.
Aircel added 864,000 subscribers and its base increased to 81.3 million, while Uninor added 463,000 users to take its base to 45.6 million at the end of reported period.
State-run MTNL added 19,353 subscribers and its base has increased to 3.423 million. Videocon added 230,000 users to take its base to 7.133 million.