Visit the UIDAI website
Go to the “Verify Email/Mobile Number” service
Enter your Aadhaar number and the mobile number you want to check
Enter the captcha code
Click on “Send OTP”
If the mobile number is linked, you will receive an OTP on that number
If no OTP is received, that mobile number is not linked with the Aadhaar
You can also visit the nearest Aadhaar Enrolment or Update Centre
Carry your Aadhaar number and valid ID proof
Ask the centre to verify the mobile number linked with your Aadhaar
Use the mAadhaar app if your mobile number is already registered and you have access to it