Hello Friends,
I am using BSNL sim card from 2 years and I am 2 year old BSNL customer and it has not given me proper services .
Its network coverage area is really low and for this reason its network lost when I go to out side from town and BSNL also cuts much charges comparision to other operators and in some days I will change my sim card operator,
So friends from my personal experience I will advice you to purchace BSNL Sim cards by conforming its coverage area so you will not face ploblems in future.