This is a new Airtel Smart SIM Offer and it works perfectly on smart sim card. I got it from one of my friend and is currently working. You don't need to tweak any imei on your device. Just follow this simple instruction below to get free 1GIG from airtel.


How To Get Free Airtel 1GB

Use any Imei below:

3562410624 + Any 5digit

3586560644 + Any 5digit

Use the Imei above to Analyze a valid Imei, you can use Imei analyzer to generate a valid Imei

If you don't have Imei Analyzer click HERE to download it

After successful analyzing

Text the imei you analyzed to 232, add S to the number eg. S356241062451234 and send it to 232 after sending the message you will get welcome Message from 232

Now text Join to 141 to recieve your free 1GIG from airtel

To check your data balance dial *123*133#

Source: http://www.ufarblog.com/2015/09/new-free-airtel-1gb-no-tweaking.html