Visit the UIDAI official website
Go to the Aadhaar services section
Select the option to verify mobile number
Enter your Aadhaar number
Enter the mobile number you want to check
Enter the captcha code
Click on verify
If the number is linked, the system will confirm it
If the number is not linked, the system will show an error or mismatch message
You can also call UIDAI helpline 1947 for assistance
Visit an Aadhaar Enrolment or Update Centre if needed