Get unlimited 3G in 2G plan of BSNL

First recharge with 274
unlimited recharge
voucher.
It'll give 2G speed.
After that
recharge with Rs. 10 - 3G voucher. You'll get
20MB with 3G speed. If not
call customer care.
Again recharge with Rs.
98 - 2gb recharge voucher.
and that's it Now surf and download with
3G. Your 2GB wil not end
because you've already recharged
with unlimited. Now you'll get
unlimited internet with 3G speed
for 1month.