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Many online services rely on OTP verification these days. This is one of the main reasons people look for how to link a mobile number with an Aadhaar online. Several services are cumbersome without the mobile number being updated with Aadhaar. This includes banking verification, SIM-related services and online identity checks. Lots of people only find out when they don't get their OTPs anymore. Ensuring that the right number is linked to Aadhaar ensures there are no delays while accessing, updating or requesting verification of the accounts.
Key Takeaways
● Linking a mobile number with Aadhaar requires biometric verification at an authorised Aadhaar Enrolment Centre or Aadhaar Seva Kendra.
● The process cannot be completed entirely online; physical presence for biometric authentication is mandatory.
● The official UIDAI fee for a mobile number update at a centre is ₹75 (effective October 1, 2025).
● You can verify your Aadhaar–mobile linking status on the UIDAI portal under "Verify Email/Mobile Number."
● UIDAI now also offers a myAadhaar online portal option for demographic updates, which remains free until June 14, 2026.
How to Link Mobile Number With Aadhaar For The First Time (Offline Method)
Linking the Aadhaar Card with the mobile number is generally done offline at an Aadhaar enrolment or update centre. The biometric verification has to be done on-the-spot, so you must go to the centre to attend. Bring your Aadhaar card and the mobile number to be registered. The operator fills the update request and verifies your fingerprint or iris scan.
Once the verification is complete, you will get an acknowledgement slip with the update request number. The linking process takes a few days, around 30 days, before it becomes active in UIDAI records. While linking a mobile number with Aadhaar for the first time requires a visit to an authorised Aadhaar Enrolment Centre or Aadhaar Seva Kendra for biometric verification. However, you can now also initiate or complete a mobile number update through the official Aadhaar app, which guides you through the process with in-app biometric authentication.
Linking Phone Number to Aadhar
The purpose of linking the phone number with Aadhar is to verify identity through OTP. When your mobile number is linked, it is helpful for banking verification and Aadhaar updation, online KYC checks, etc. Its significance is felt during the opening of investment accounts, filling up PAN details or accessing online services related to the government.
Many digital verification systems get stuck after trying to validate the OTP and not having a linked mobile number. This is why it's advisable to have an active and updated registered number. Even if you change your mobile number to a different one, you may have to re-update your Aadhaar later.
Also Read About: How to Link Aadhaar Card with PAN Card?
Steps to Update the Mobile Phone Number Linked to the Aadhaar Card
To link Aadhaar and phone numbers, head to the nearest Aadhaar enrolment/update centre. Ask for the Aadhaar correction/update form and fill in the correct mobile number. Once the request is made, the executive checks the details in Aadhaar and does the biometric authentication.
Once you submit, you will get an acknowledgement slip with the Update Request Number (URN). Post verification, the updated mobile number is reflected in the UIDAI records. Many people change their mobile numbers upon changing their SIM card or switching telecom providers. OTP authentication is based on this number.
Also Read About : Aadhaar Card Mobile Number Update
How to Check the Mobile Number-Aadhaar Card Linking Status?
Many people check their UIDAI records to successfully link the Aadhar Card with their mobile number. The status can be checked by providing Aadhaar details, and an OTP sent to the registered mobile number in the UIDAI portal.
Sometimes, the telecom operators also send confirmation messages after completion of Aadhaar verification. The update might still be in progress if the OTPs keep coming in with the old number. The update to Aadhaar is a process that takes some time before the updated mobile details are fully updated in connected services.
Documents Required To Link Aadhaar to Mobile Number Online
Documentation requirements for linking a mobile number to an Aadhaar card online, related enquiries are typically minimal, as Aadhaar contains all the details regarding identity. Aadhaar card or Aadhaar number is required in most of the situations during the update process. Biometric verification is the primary identity verification process. It is advisable to take the Aadhaar card or a downloaded copy to the update centre, and it generally helps to avoid delays. During verification, some centres may require the current mobile phone number as well.
While the process may involve lengthy paperwork, the mobile linking process with Aadhaar typically relies on biometric verification rather than on the need for a series of supporting documents. Having the correct information up front helps the process run more smoothly.
Also Read About : How to Link Aadhaar with Demat Account?
Charges for Aadhaar Link to Mobile Number
Linking of the Aadhaar card to the mobile number is generally done through a nominal service fee at any of the Aadhaar update centres. The charges could be slightly different based on the request type, but in most cases, the pricing would be standard as per UIDAI. The fee typically includes biometric verification and processing fees associated with the request for the biometric update.
Aadhaar update charges continue to be regulated, and people shouldn't be charged by unofficial agents for extraordinary amounts. Always get the acknowledgement receipt after payment, as this will include the number of the update request that is needed to track. While the process may seem straightforward, many individuals fail to save the receipt securely for when the new mobile number shows up properly.
Situations Where You Need to Link Aadhaar to Mobile Number
There are many services that have started asking for linking Aadhaar to the mobile number for verification. OTP authentication with Aadhaar records is required for banking updates, investment account access, SIM verification, etc., and online KYC checks. There are also instances where people need to get their Aadhaar updated with their mobile number while doing some online applications, downloading documents or availing any government-related service digitally.
The problem typically happens when the mobile number changes, but the Aadhaar details are not updated. OTP's keep going to the old number, causing access issues later. In some cases, even online account recovery relies on the Aadhaar-linked OTP verification. This is why many people think of mobile linking as an onetime process, but as the mobile number changes, regular updates are equally important.
How to Change Mobile Number Linked With Aadhaar?
Go to any authorised Aadhaar enrolment or update centre to change the mobile number linked with Aadhaar. The update can not normally be done online, as the authentication is done by biometric verification before UIDAI accepts. You enter the new mobile number and full fingerprint or iris verification in the centre. When submitted, a receipt slip with the request number is provided for tracking.
The reason why people often change their Aadhaar-linked number is that they have lost their previous SIM or changed their telecom company. Occasionally, the change is required due to the malfunctioning of OTP-based services. With the updated number now in the Aadhaar records, the authentication process and the online verification process will generally become smoother and easier to manage in the future.
Advantages of Linking Mobile Number With Aadhaar Card
By linking the mobile number with the Aadhaar card, various verification procedures in online services are simplified. Access to banking services, verification of PAN and updating KYC information online, downloading documents, etc., will be easier with OTP authentication.
Several government and financial entities have now been mandating Aadhaar-linked OTP verification before accessing accounts or updating them. A linked number also comes in handy when you need to recover the password or confirm your identity.
Another benefit is seen during the process of opening an online investment account, where Aadhaar verification facilitates document authentication promptly. If the registered mobile number is not used, these processes can cease halfway. Many people tend to ignore such an update, just as it seems like a regular one, but that linked number underlies numerous digital services that are used on a daily basis. The OTP verification is crucial for even routine activities like downloading the Aadhaar copies.
Also Read About : How to Link Aadhaar Card with Bank Account?
Conclusion
Given the increasing digitisation of verification systems in financial services, telecom services, and banking, it is becoming increasingly significant to keep Aadhaar details updated. A linked mobile number is useful when the OTP is used in the authentication process, it is used for account recovery, for online KYC checks and identity verification requests.
Usually, the process is quite simple, but linking and number changes are still subject to biometric authentication at authorised centres. The linking of Aadhaar with a mobile number is often forgotten by people after they encounter an issue in the login or verification steps. It's much quicker to update the right mobile number in advance. It's these little things that can make a big difference when online services become a part of your everyday finances.
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