Free Airtel 1 GB 4G Data by just missed a call (Working Again)

1.Visit Airtel 4G Page

2.Enter your Number and Click Check if 4G      Ready

3.Request 4G Sim (if you have a 4G mobile sim then neglect above steps)

4.Dial 52122 to get 1GB 4G Data.

5.To check balance dial USSD code.

   *123*458# or *121*2#