Open the Airtel Thanks app
Sign in with your Airtel number
Go to the Airtel Tunes or Hello Tunes section
Search for the song you want
Select the song
Tap Set as Caller Tune
Confirm activation
Wait for the confirmation SMS
Use the Airtel Thanks app to browse trending tunes
Choose a caller tune from the available list
Set it for your Airtel number
Send an SMS with the song name or code to the Airtel caller tune service number if available in your circle
Follow the reply instructions to activate the tune
Call the Airtel caller tune service number if available
Follow the voice prompts to set the tune
Check that your Airtel plan supports caller tune service
Ensure your account has active service eligibility