Dial 121 from your Airtel SIM and follow the voice menu to hear your number
Dial 282 or 1211# if available in your country to display your Airtel number on screen
Dial *121# and check the menu for the option to view your number
Call or send a message to another phone and check the number that appears
Check the SIM card pack or documents you received when you bought the SIM
Open your phone’s Settings and look under About Phone, SIM status, or Mobile Network
Use the Airtel Thanks app if your number is already linked to the app
Contact Airtel customer care and ask them to tell you the number linked to your SIM