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How to Change Mobile Number in a Bank Account

Updated on Friday, August 14th, 2026 | By IndusInd Bank

Keeping your bank account details up to date is essential for ensuring seamless banking transactions. If you have changed your mobile number, it is important to update it with your bank. This allows you to continue receiving transaction alerts and other critical information.  This article will guide you on how to change the mobile number in your bank account.

Common Reasons for Changing a Mobile Number in a Bank Account

There can be multiple reasons for changing your mobile number. Some of the common ones include:

Deactivation of Existing Number: Telecom providers may deactivate old or inactive numbers and reassign them to new users. This could compromise the security of your important banking messages.
Aadhaar Syncing: It is highlyrecommended to update the same mobile number with your bank that is also linked to your Aadhaar. This simplifies identity verification and ensures consistency across financial records.
Lost or Stolen Phone: In such cases, it is important to update your bank records with a new mobile number to maintain account security and avoid sensitive banking communications being sent to the wrong number.
Relocation to Another Country: People usually change their number when they move abroad. So, it is necessary to update your new mobile number in your bank to ensure you receive banking communications.

Which Documents are Required to Change Your Mobile Number in a Bank Account?

To update the mobile number linked to your bank account, you’ll need to provide a few key documents. These help the bank verify your identity and process the request securely. While the exact list may vary by bank, here’s what’s commonly required:

Duly Filled Application Form: Most banks offer a dedicated form for updating mobile numbers, either online or at the branch.

Proof of Identity (POI): A government-issued photo ID such as your Aadhaar Card, PAN Card, Passport, Voter ID, or Driving Licence.

Passbook or Account Statement: Some banks may ask for your bank passbook or a recent account statement to confirm account ownership.

Old and New Mobile Numbers: Be sure to clearly mention both in the application form.

Tip: When visiting a branch, always carry the original documents along with self-attested photocopies to avoid delays.

Different Ways to Change Your Mobile Number in a Bank Account

You can update your mobile number in your bank account through various methods. Here’s a step-by-step guide on how to change the phone number in your bank account through different methods:

1. Change Your Mobile Number in a Bank Account via Internet Banking

You can easily update your mobile number via net banking by visiting your bank’s official website and following these steps:

1. Login using your user ID or registered mobile number.

2. Navigate to ‘My Profile’ or ‘Personal Details’ section on the dashboard.

3. Choose the option to modify or update your registered mobile number.

4. Update your new number and complete identity verification process.

5. Submit the request and wait for the bank to confirm your number change.

2. Change Your Mobile Number in a Bank Account via Mobile Banking

Follow the given steps to learn how to change the mobile number in your bank account via your bank’s official app:

1. Log in to your bank’s mobile banking app.

2. Navigate to the ‘Settings’ or Profile’ section.

3. Select ‘Update Mobile Number’ or a similar option and enter your new mobile number.

4. Confirm the change with the OTP sent to your old number.

5. Wait for the bank to process the update and send a confirmation to your new number.

3. Change Your Mobile Number in a Bank Account via ATM

You can visit the nearest ATM to update your mobile number in the bank account. 

1. Insert your debit card into the ATM and enter your PIN.

2. Select the ‘Services’ or ‘More Options’ menu.

3. Choose the option to update your mobile number.

4. Enter your old mobile number followed by the new mobile number.

5. Confirm the change and wait for the confirmation message.

4. Change Your Mobile Number in a Bank Account via Branch Visit

You can update your mobile number with a visit to the nearest branch as well:

1. Visit your nearest bank branch with your account details. 

2. Fill out the mobile number change request form provided by the bank.

3. Submit the form to the bank representative.

4. The bank will process your request. You will soon receive a confirmation message on your new mobile number.

Note that some banks may have different processes on how to change the phone number in your bank account. You can reach out to your bank’s customer service team to get clarity on any queries. 

Also Read: Easy Ways to Change Your Mobile Number in Current Account

What to Do If You Do Not Have Access to Your Old Number?

First things first: Don’t worry. If you don’t have access your to your old mobile number, you can still update it via any of the following options:

Use Alternative Verification Methods: You can use your debit card details, internet banking details, customer ID, etc. to help the bank verify your identity and update your mobile number.

Visit Your Bank Branch: You can visit your home bank branch and submit a duly filled mobile number update form with identity proof and bank account details.

How Long Does It Take for a Bank to Update a Phone Number?

The time it takes to update your mobile number depends on how you initiate the request:

Via NetBanking or Mobile App: If your bank allows online updates, the change is usually completed within 24 to 48 hours.

Through ATM: Some banks also offer the option to update your number at an ATM. This typically takes 1 to 2 working days.

By Visiting a Branch: If you’re submitting your request in person, it may take 2 to 5 working days, depending on the bank’s internal processing time.

You’ll usually receive a confirmation via SMS or email once the update is complete.

Benefits of Updating the Mobile Number in Your Bank Account

Updating your mobile number in your bank account offers the following benefits:

1. Security: Ensures you receive real-time alerts for all transactions. This helps you detect any unauthorised activity immediately.

2. Convenience: Allows you to receive OTPs and important notifications on your present mobile number.

3. Accessibility: Keeps you informed about your account status, promotional offers, and updates from the bank. This ensures you do not miss out on any important information.

4. Better Banking Experience: Allows for seamless use of mobile banking services. This, in turn, enables you to manage your account in an organised manner from anywhere.

5. Compliance: Keeps your contact information current. This ensures compliance with bank regulations and helps avoid any disruptions in services.

Also Read: How To Change Name in Bank Account?

Important Tips for Updating Your Mobile Number Safely

Follow these safety tips and your update your mobile number securely:

Use Only Official Channels: Utilise officially banking channels like your bank’s official website or mobile banking app, bank ATMs, authorised bank branches and bank’s customer care portals to avoid getting phished.

Don’t Share OTPs or Credentials: Never share your OTPs or banking credentials (like ATM pins, UPI pins, customer ID, etc.) with anyone. You never know when you become a victim to a phishing or fraudulent attack.

Keep Old Number Active: If it is possible, try to keep your old mobile number active until the update is complete. Many banks send OTPs or verification codes to the existing registered number before approving the change.

Update New Number Across Financial Services: Always remember to update your number not only with your bank but also with UPI apps. This ensures uninterrupted access to financial services and notifications.

Conclusion

Knowing how to change your phone number in your bank account is crucial for maintaining the security and convenience of your account. If you have not updated your number yet, follow the above-mentioned steps to ensure you stay connected with your bank. 

One must also choose a banking partner that provides timely assistance and beneficial features with their bank account. 

IndusInd Bank offers a variety of savings accounts, with attractive savings account interest rates, to help you manage your finances. With convenient digital banking services, attractive interest rates, and solid customer service, IndusInd Bank offers unparalleled banking to its customers. 

Open a savings account online with IndusInd Bank today and enjoy a seamless banking experience.

FAQs

Will I receive SMS alerts immediately after updating my mobile number?

Ideally, you should start getting SME alerts (OTPs and transaction notifications) within 5 working days after updating your mobile number.

Can I link the same mobile number to multiple bank accounts?

Yes, you can use the same mobile number to link multiple bank accounts, including accounts held with different banks. Just ensure that the number is registered with the bank and is KYC-verified.

Will changing my mobile number affect my UPI or net banking services?

Yes, your UPI or net banking services will stop working until you verify and link your new number with your bank accounts and UPI apps.

Is there any fee or charge for changing my registered mobile number?

Typically, banks don’t impose any fees or charges for changing your registered mobile number. However, it is always recommended to get in touch with your bank’s relationship manager or customer centre for detailed information.

Can NRI customers update their registered mobile number from abroad?

Yes, NRIs can update their registered number for their bank accounts from overseas by following the steps and processes laid down by their banks.