I used this all servicwe like 2G and 3G but there are very bad network.
Here the network of bsnl is pathetic I dont know what is happening with this network, as I m a crew I use roming to all over the india yesterday I ws in north( delhi) their also the same thing, I am not able to receive any call and if by chance my phone rang not able to hear what the other person is saying . just like walky -talky . one person can say at one time! Hope BSNL should do something for it