In this post i have posted free gprs setting. it's tested and it's working.

Proxy= 100.1.200.150

Port= 8080

Homepage=www.google.com/m

Access Point = airtelmms.com

User = none

Password = none

Ask for Password = no

When u get connected u'll asked for Username & Password. Make the following :-

USERNAME = Ur Mob. No. (Eg- 9903123456)

PASSWORD = Last six digit of ur Mob.No. (Eg-123456)