Airtel offering free Free 500 MB Airtel 3g Data when you add alternate contact details. Offer valid for Airtel prepaid and retail postpaid customers. For prepaid, validity of free data is 7 Days.
How to get:-
- Visit offer page here only using your Airtel 3g sim
- Click on "add alternate contact detail"
- Put OTP you receive
- Update your contact details
- Free data will be added soon to your account. to check balance use "123*11#