Mobile Number Update: Change Mobile Number in Bank Account via ATM, Net Banking or Branch

Bank Account: In today’s digital age, bank accounts and mobile numbers are inseparable. Whether it’s UPI payments, OTP verification, or balance alerts—no banking task is complete without a linked mobile number. Often, we have to change our old number or add another for security reasons.

If you’re afraid of long bank lines and cumbersome forms, there’s good news. According to new rules for 2026, you can now update your number within minutes through an ATM, Net Banking, or Home Branch.

Mobile number mandatory for a bank account

Almost everyone has a bank account these days, but it’s not just for depositing money. The mobile number linked to your bank account is your “digital identity.” Without it, you can’t log in to net banking, receive OTPs for online shopping, and most importantly, you can’t access every transaction alert, even small or large, in your account. Keeping your mobile number updated is crucial from a security perspective, ensuring you can immediately detect any unauthorized activity and keep your money safe.

3 Easiest Ways to Update Your Mobile Number

Banks have made this process quite flexible, keeping customer convenience in mind. You can choose any of the following methods based on your convenience:

1. Through an ATM

If you have a bank debit card, an ATM is the easiest option. You’ll need to go to your nearest ATM, swipe your card, and enter your private PIN. Select the “Registrations” or “Personal Details” option on the screen. Click “Mobile Number Registration” and then “Change Mobile Number.” Enter your new 10-digit number. An OTP will be sent to your new number, and once verified, your work will be complete.

2. Through Net Banking

If you use internet banking, you don’t need to visit the bank at all. Simply log in to the bank’s official website with your user ID and password. Then, go to the “Profile” or “Security Settings” section. There, you’ll find a link to “Update Mobile Number.” Enter the new number and complete the process from the comfort of your home using OTP or e-KYC. This is the most convenient method.

3. Visiting a Bank Branch

For those who aren’t tech-savvy or don’t have online access, it’s best to visit your home branch. Go to the bank and ask for a ‘Mobile Number Update’ form. Carefully fill in your old and new mobile numbers. Be sure to bring a photocopy of your Aadhaar or PAN card and passbook. The bank staff will verify your signature and provide a receipt.

How long does it take to update

Once you submit your mobile number update request, the bank’s system thoroughly verifies your data. Your new mobile number is typically activated within 24 to 48 hours. Once the process is complete, a confirmation message will be sent to your new number. All SMS alerts, OTPs, and other banking information related to your account will then be sent to the new number.

Important Tips

Always exercise caution when changing your mobile number. Never share your OTP or debit card PIN with strangers or anyone claiming to be a bank employee. Banks never ask for such personal information over the phone. If you’re changing your number through an ATM or online, ensure you’re using the bank’s secure website or official machine. Always keep your banking details confidential to avoid cybercriminals.