Visit the UIDAI website: https://myaadhaar.uidai.gov.in/
Log in using your Aadhaar number and OTP
Go to the “Aadhaar Services” section
Select “Verify Email/Mobile Number”
Enter your Aadhaar number and mobile number
Submit the form to check whether the mobile number is linked
If you do not receive OTP on the number, it may not be linked
Visit the nearest Aadhaar Enrolment/Update Centre for confirmation if needed