Visit the official UIDAI website
Go to the Aadhaar Services section
Select Verify Email/Mobile Number
Enter your Aadhaar number and mobile number
Enter the captcha code
Click Submit
If the mobile number is linked, the system will confirm it
If it is not linked, the system will show an error or mismatch message
You can also check by calling UIDAI helpline 1947
Visit an Aadhaar Enrolment or Update Centre for verification in person