Visit the UIDAI website: https://uidai.gov.in
Open the “My Aadhaar” section
Click on “Verify Email/Mobile Number”
Enter your Aadhaar number
Enter your 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 or is inactive
You can also use the UIDAI helpline: 1947
Visit an Aadhaar Enrolment/Update Centre for confirmation if needed