This trick is works for most of all state of india like delhi, panjab,AP,gujrat, maharastra, panjab etc.
So try this proxy and get gprs in your own mobile.
- Make a new setting in your mobile---
APN :-airtelgprs.com
PROXY :-208.53.161.44
PORT :- 80
HOME PAGE :- 203.115.112.4 or 122.170.122.214