A recent TRAI (Telecom Regulatory Authority of India) report indicated that the country has achieved around one million 4G LTE subscribers as on 30 June 2015.

The TRAI report says about 25 percent of the total wireless subscribers use wireless data (Internet) services in India.
There were about 300 million wireless Internet subscribers in the country as on 30 June 2015. Out of this subscriber base, about 207 million subscribers use 2G (GPRS, EDGE and CDMA-1X) networks to access Internet, about 92 million subscribers use 3G (HSPA, WCDMA, EVDO etc.) and rest are 4G LTE subscribers.

TRAI STATISTICS ON MOBILE INTERNET

1 million 4G subscribers
92 million 3G subscribers
207 million 2G subscribers
(Courtesy: Telecom Lead)