Here is d trick-
1. Activate zero rental plan in your
bsnl 2G sim.
2. Now sms your handset model to
58355, you will receive gprs settings.
3. Now make bsnl live as your default
settings.
4.open home page by pressing 0 in
nokia nd dont know abt other sets.
5. For first time you will get charged
some paise but after dat it would not
charged you.
6. Now open ur web browser and u
will get access to surf.
7. After that move to umts mode from
dual mode or gsm.
8.Now for first time it will say , check
packet data connection but after some
tries it will connect you to 3G.
Now enjoy free surfing.