Free Airtel 3g Trick

Step. 1- First of all Open mozilla firefox. Now go to Option. 
Now go to Advance >> Network. 
Now click on Settings. A window will open with pop up.Now tick the this option Manual proxy configuration. 
Now Enter 176.31.222.34 in HTTP proxy and enter 80 on port. 
Now click on ok.

Step. 2- Now go to General settings and enter 203.115.112.5 on home page and click on save.

Note: This trick will work on only 3G sims. To convert your sim from 2G to 3G just send a sms to 121 with text 3G. And recharge your sim by smallest 3G pack