Travelling from Calcutta to South India by train during April 2011, Aircel proved that its network is perhaps the worst among mobile operators. During a total journey time of 28 hours, Aircel signal was not even available for 5 minutes!
This is a disgrace and the TRAI should consider penal action against the operator. Even scanning other networks did not help because Aircel does not seem to have a tie-up with any other operator. Very poor show!