In the last few months, the GSM operators have been steadily losing connections. According to the statstics for November 2012, there has been a loss of 9.38 million GSM connections. Air-Tel lost 2.80 million, Vodafone 2.38 million and idea 1.56 million. Other companies have also lost.
The main reason is the latest proposal of the TRAI that the non-active connections be disconnected. To increase their connections in order to get more spectrum and for publicity purposes, the private companies have been providing connections with out full verification and also very liberally with out fulfilling the licence conditions. Now they are compelled to change that position and the drastic reduction in the connections. As per the report, it is only BSNL, MTNL and Loop which did not suffer the reduction. The present major GSM providers have the following connections and Market Share:

Air-Tel 183.61 millions 27.71%
Vodafone 150.77 22.76%
Idea 114.14 17.20%
BSNL 97.17 14.44%