BSNL is the only network who provides all india network coverage area. From Kashmir to Kanya kumari BSNL is everywhere. You just dont have to worry when you have bsnl network. Where ever you go it goes with you. In the segment of charging and call rates they are also very fine.
You can have many plans as you want and they too very affordable. In the segment of customer care I dont think so that they neglect their customers or there problems. Over all BSNL operators provide perfect network coverage a person want and that too affordable. I recommend every one to use this network.