It is the only mobile network established from our govt. In the year 2000.Named BSNL( Bharath Sanchar Nigam Limited) .
The most important feature of this net work is it is the only network to support roming free that means it can connect the users all over india without any roming charges.In recent times bsnl update their netwonk into 3g.so this will support the users to their net work problems .