How to Change Mobile Number in Bank Account in 2026 ?

Your registered mobile number is more than just a contact detail. It’s your access point to OTPs, transaction alerts and important banking updates. So, if you’ve switched to a new number, updating it quickly is a must. Missing alerts or OTPs is not an option when it comes to your money. 

The good news? Mobile number change in bank account is simple and can be done in multiple ways. To change your mobile number in your bank account, you can use your bank’s mobile app or net banking (usually verified via an OTP sent to your old number), visit an ATM using your debit card and PIN, or go to a bank branch with valid ID proof to submit a request form. Always use official bank channels and keep your old number active temporarily for verification. 

Let’s break down how to change mobile number in bank account step by step. 

How to Change Mobile Number in Bank Account Online? 

If you prefer convenience, learning how to change mobile number in bank account online is the easiest option. Most banks follow a similar process. 

Step 1: Log in to Internet or Mobile Banking 

Visit your bank’s official website or mobile app and log in using your credentials. If you haven’t registered for net banking, you can usually sign up online. 

Step 2: Go to Profile or Settings 

Look for sections like Profile, Settings, or Personal Details, where account-related information is stored. 

Step 3: Select Mobile Number Update Option 

Choose the option related to how to change phone number in bank account or update contact details. 

Step 4: Identity Verification (Mandatory Step) 

To protect your account, banks require identity verification before approving any phone number change in bank account. This may include: 

• An OTP sent to your old registered mobile number 

• Your internet banking password 

• Debit card details or security questions 

This step ensures the mobile number change in bank account is authorised by you and aligns with KYC and fraud-prevention guidelines. 

Step 5: Enter Your New Mobile Number 

Carefully enter your new number and double-check it before proceeding. 

Step 6: Confirm and Submit 

Once submitted, you’ll receive a confirmation message. After processing, all OTPs and alerts will be sent to your updated number, completing the phone number change in bank account process. 

Bank Branch Visit: Offline Method (Step-by-Step) 

If online banking isn’t an option, here’s how to update mobile number in bank account by visiting a branch: 

1. Visit your nearest or home bank branch 

2. Request a mobile number update form 

3. Fill in your account details and new number 

4. Submit valid ID proof such as Aadhaar card or PAN card 

5. The bank verifies your documents as per KYC compliance 

6. Once approved, your mobile number change in bank account is processed 

Alternate Ways to Update Your Mobile Number 

Apart from net banking and branch visits, some banks also offer: 

• ATM Update: Insert your debit card, enter your PIN and choose ‘Update Mobile Number’ 

• Customer Care: Some banks allow updates over phone support after verification 

These options are useful if you’re checking can we change mobile number in bank account online or through assisted channels. 

Important Tips to Keep in Mind 

• Always use official bank apps, websites, ATMs, or branches 

• Keep your old mobile number active until verification is complete 

• Carry valid ID proof like Aadhaar or PAN for offline requests 

• Mobile number updates are part of mandatory KYC compliance, so mismatched details may cause delays 

• Never share OTPs, PINs, or passwords with anyone 

• Just like deciding which is safer, a credit or debit card, choosing a secure and official update method is crucial 

Following these tips ensures your mobile number change in bank account is smooth and secure. 

Why Updating Your Mobile Number Matters 

Your registered number is essential for account security, real-time alerts and digital banking access. It’s also needed when applying for financial services. For example, you can sign up using your mobile number to apply for a loan instantly when required. 

With Fibe, you can get cash up to ₹10 lakhs in minutes with flexible repayment options. Download the Fibe App today to explore more. 

FAQs on Change Mobile Number in Bank Account Online 

1. How many days will it take to change mobile number in bank? 

Most banks update your number within 24 hours to 3 working days. For branch requests, it may take up to 5 working days. 

2. Can we change mobile number in bank account online? 

Yes, we can change mobile number in bank account online is a common question and most banks allow this through net banking or mobile apps with OTP verification. 

3. Can I change my bank account phone number online? 

Absolutely. If you’re wondering can we change mobile number in bank account online, simply log in to your bank’s app or website and follow the profile update steps. 

4. Will I get confirmation after the update? 

Yes, banks usually send a confirmation SMS to your new number and sometimes an email once the phone number change in bank account is complete. 

5. Is there any fee for changing my mobile number? 

No, banks generally offer mobile number change in bank account as a free service.