Airtel free 3g internet trick for android by droid vpn 2016

1. Download and install droid vpn

2. Use TCP as connection protocol in droid vpn

3. Now click on headers, and enter following

Host: one.airtel.in

X-Online-Host: one.airtel.in

4. Now save settings. and tap connect button. you are done. enjoy free internet on your airtel sim