Visit the nearest Aadhaar Enrolment/Update Centre
Carry your Aadhaar card or Aadhaar number
Fill out the Aadhaar Update/Correction form
Select mobile number update as the required change
Submit the form at the centre
Provide biometric verification if asked
Pay the applicable update fee
Collect the acknowledgement slip with the Update Request Number
Wait for the update to be processed
Check Aadhaar status online using the Update Request Number
Download the updated Aadhaar after the mobile number is linked or updated