1.Open ur imei analyser( download from playstore if you dnt have) and type 14 digits starting with 35624106457…to get the 15th digit
2. Copy the 15 digit numbers
3. Open ur sms and type S the 15 digit imei e.g S 356241064210990
4. Send it to 232
5.Once you get a reply send join to 141
6.airtel will give you 1gb immediately
NOtE: No tweaking needed, no mobile uncle tool, no mtk engineering mode