Just recharge your Airtel number with rupees 2. The recharge should be done by any shop or use any payment gateway like paytm,freecharge etc. But never use your Airtel app to recharge. Also never use your Airtel money also. After successful recharge you will get a message and 500 mb is credited. After 1 hour 1.5 GB will be credited to your account. Try this trick before it get blocked. Thank you.