Visit the official UIDAI website
Go to the “Verify Email/Mobile Number” service
Enter your Aadhaar number and mobile number
Enter the captcha code
Click on “Send OTP”
If the mobile number is linked, you will receive an OTP on that number
If you do not receive an OTP, the mobile number is not linked to Aadhaar
You can also visit an Aadhaar Enrolment/Update Centre to verify or update the mobile number
Call UIDAI helpline 1947 for assistance