Visit the nearest Aadhaar Enrolment/Update Centre
Carry your Aadhaar card and a valid ID proof
Ask for the Aadhaar Update/Correction form
Fill in your current mobile number and the new phone number
Submit the form to the operator
Complete biometric verification if asked
Pay the applicable update fee
Collect the acknowledgement slip with the URN
Wait for the update to be processed
Check the status online using the URN
Use the updated mobile number for Aadhaar OTP services