• Recharge with rs.9 3g pack(25mb/day)
• Use default internet settings(apn : airtelgprs.com)
• Now configure your web browser as follows : 

Web Browser Settings:
For Firefox
Navigate to Options>Advance>Network & Settings>
Manual Proxy Settings.
Put Proxy = 199.115.229.205 (You can use other proxies which are working in your area)
Put port = 80
NOTE: Don't Download Large Files More than 50MB.
Save Settings
Now Navigate to Options>General>Homepage>
Put Homepage : http://airtellive.com
South area people use this homepage if the above homepage not works for you : ic.bsbportal.com
Save and Click Homepage Icon.
Done.
Disconnect internet till 50 MB is reached otherwise your sim will be blocked. Use networx software to check how much MB you have used. If you have blocked your sim don't wory , i will post next tutorial on how to unblock your sim.
Enjoy fast free internet.