I started using BSNL network 2 months ago. I was tempted to buy this after seeing the prepaid plans. It is comparatively more cheaper than most of the other network operators. But nowadays I am facing lot of problems, lots of unwanted messages are coming as texts.
Moreover the network is very slow 3G is similar to the 2G speed of other operators. To get a proper network you have to reside near a urban areas. At most of the places you wont get proper network. It is huge problem. The plans are very cheap and will be good for grand parents.