How to Change Phone Number in Bank Account Online

Updated on: 20 Jun 2025

Linking your mobile number to your bank account is necessary in today’s digital world. It helps you receive transaction alerts, OTPs for secure online banking, any bank updates and also safeguards against fraud. Whether you want to link your mobile number to a bank account online or update it offline, the process is simple and quick.

Read on to know how to link mobile number to bank account online or offline and the importance of updating one.

Why is it Important to Link Your Mobile Number to Your Bank Account?

Here’s why keeping your bank account linked to your mobile number is highly important:

Better Security: Every transaction generates a notification that enables the organisation to identify unauthorised activities early.
Access to Digital Services: Most online banking services require a mobile number link to a bank account online for secure transactions.
Convenience: If the mobile number is linked to your bank account, it makes it easier to receive OTPs for secure payments and get bank account-related updates or alerts instantly.

How to Link or Update Your Mobile Number?

You can easily link your mobile number to a bank account online or offline using the below-listed methods:

1. Online Banking Portal

Most banks allow you to update your mobile number through their online banking platform. This is one of the easiest ways for a mobile number link to a bank account online.

Here’s how:

Log in to your internet banking account
Check for the ‘Profile’ or ‘Settings’ option
Select ‘Update Mobile Number’ or ‘Manage Contact Details’
Enter the new mobile number and save it
Verify the update with an OTP sent to your mobile number

2. Mobile Banking App

If you use your bank’s mobile app, updating your mobile number is quick and easy. It ensures a smooth mobile number link to a bank account online update. Follow the below easy steps:

Open your bank’s mobile app and log in
Go to ‘Profile’ or ‘Contact Details’
Enter your new mobile number
Confirm the change using an OTP or password

3. Visting Your Bank Branch

If you prefer an in-person interaction, you can always go to the bank and make the changes by filling out the form to update your mobile number. Here’s how:

Request a ‘KYC Update Form’ at the bank
Fill in your account details and new mobile number
Provide a valid photo ID for verification
Submit the form and wait for a confirmation message from the bank

4. ATM Machines

Some banks allow mobile number updates through ATMs as well. This method provides a quick and secure way to link a mobile number to a bank account online. Here’s how:

Insert your debit card and enter your PIN
Select ‘Services’ or ‘Update Mobile Number’ from the menu
Enter the new mobile number and confirm it
Verify the change by entering the OTP received on your mobile number.

Also Read: Steps to Get Your Bank Account Statement

Things to Keep in Mind When Linking Your Mobile Number to Bank Account

While linking phone number to your bank account, you should always consider the following:

Ensure the mobile number you provided is working and in your use.
For any updates, always use official bank channels to avoid scams or frauds.
Look for processing notifications with your bank to confirm whether the update has been done.
While facing any issues, connect with your bank’s customer support.

Benefits of Linking Your Mobile Number to Bank Account

Keeping your phone number link to bank account updated comes with many advantages:

Instant Alerts: For every single transaction, you will get a real-time notification
Fraud Prevention: Detect fraud and unauthorised transaction activities
Ease of Access: Secure online banking with OTP-based authentication
Account Management: Check balances, get mini-statements and access multiple services easily

Linking your phone number to your bank account is not just convenient—it’s essential for secure and seamless banking. Whether you update it online, through an ATM or by visiting your bank, the process is just a few steps making it super quick and simple.