BSNL is the worst network in india the one of the best problem in the network is that the call drop problem in bsnl and also there are network problem in urban areas so I think my mobile phone not capture network bsnl but other sim like airtel and idea is working good.
Many time the call gets disconnected automatically when I am in roaming or when I stay for some weeks in other state.someone calls on my number it tells the subscriber is currently switched off or not range.the 3g net is ok ok but not gives high speed