Follow these steps below and enjoy.
Airtel 3G/4G Sim
Default Airtel APN Settings
Hammer VPN app, which you can download HERE.
Airtel Hammer VPN Settings
Select protocol As UDP
Click on advance settings
Set DNS 188.8.131.52
Now set Rport 1194
Click on the “connect” button
Allow Hammer VPN to create a VPN service on your Android device. Now, enjoy your free Airtel browsing.
Alternative Airtel Hammer VPN Settings
Start by opening the Hammer VPN app and select any (DE or NL) free server.
You can still check on Working free data plan on Airtel,glo and Mtn| May 2019