The procedure of updating your details should begin immediately when your phone number changes.

Aadhaar Update: The process of updating your mobile number in Aadhaar becomes necessary because it enables you to use OTP-based verification and online updates and government schemes. The following guide provides clear instructions to follow when your old number is inactive or incorrect.
Your registered mobile number is required for Aadhaar authentication, downloading e-Aadhaar, and accessing services such as PAN linking, bank verification, and welfare benefits. The digital processes that you need to complete will become difficult to manage without your current phone number.
At this time, Aadhaar users cannot complete their mobile number updates through online channels. UIDAI requires residents to visit an Aadhaar Seva Kendra or authorized enrollment centre for security purposes when they need to update or change their mobile number.
Go to your closest Aadhaar Seva Kendra or enrollment center.
Request the Aadhaar Update/Correction Form from the staff.
Provide your Aadhaar number together with your new mobile number.
The operator needs you to submit your form for biometric verification.
The update service requires a payment of ₹50.
The Acknowledgement Slip (URN) will be sent to you so that you can monitor the progress of the update process.
The process of mobile number change needs no document requirements because only biometric authentication needs to be completed.
The process of mobile number update typically requires a duration between 5 and 10 days, which establishes the time frame for completion. Your new number will begin to receive OTPs after the update process has been completed.
To check your update status, you need to visit the UIDAI website, where you should click on 'Check Aadhaar Update Status' and provide your URN.
Your access to vital services depends on your practice of keeping your mobile number current in Aadhaar because this practice protects you from authentication problems. The procedure of updating your details should begin immediately when your phone number changes.