As on May 31, 2011, there are 840 million (84 crores) mobile subscribers in India.
Active mobile subscribers during May were 588.13 million (58 crores)
Fixed line subscribers are 34.40 million (34 crores) in India.
So total wired and wireless subscribers in India are 874.68 million (87.4 crores)
This data was released by Telecom Regulatory Authority of India (TRAI) recently.