IOB Mobile Number Registration and Update: Full Guide

IOB Mobile Number Registration and Update: Step-by-Step Guide

You can register or update your mobile number with Indian Overseas Bank (IOB) through the branch, IOB ATM, the IOB Mobile app, or by calling customer care. A registered mobile number is needed for OTPs, transaction alerts, and access to all digital banking services.

Why Register Your Mobile Number with IOB?

• Receive OTPs for internet banking, UPI, and other transactions
• Get instant SMS alerts for account activity
• Access IOB SMS banking and WhatsApp banking
• Receive important bank notifications and security alerts

Method 1: Visit the IOB Branch

1. Go to your IOB home branch with your passbook and a valid ID (Aadhaar card preferred).
2. Ask for the mobile number registration or update form.
3. Fill in your account number and new mobile number.
4. Submit the form to the bank officer. The update takes 1 to 2 working days.

Method 2: Update via IOB ATM

1. Visit any IOB ATM with your debit card.
2. Enter your PIN and select More Options.
3. Choose Mobile Number Registration.
4. Enter and confirm your new number. An OTP is sent for verification.

Method 3: IOB Mobile App

1. Log in to the IOB Mobile app.
2. Go to Profile Settings and select Update Mobile Number.
3. Enter the new number and verify via OTPs sent to both old and new numbers.

Method 4: Customer Care

Call IOB’s toll-free number 1800 425 4422. Request a mobile number update and complete identity verification over the call.

Key Takeaways

• IOB mobile number can be updated via branch, ATM, IOB Mobile app, or customer care.
• Branch updates take 1 to 2 working days; ATM and app updates are faster.
• Both old and new numbers may be required for OTP verification in app-based updates.
• A registered number is essential for OTPs and transaction alerts.

Frequently Asked Questions

Can I update my IOB mobile number without visiting the branch?

Yes. Use the IOB Mobile app or any IOB ATM to update your mobile number without a branch visit.

What documents do I need to update my IOB mobile number at the branch?

Carry your passbook and a valid government-issued ID such as Aadhaar card.

How long does it take to update the mobile number in IOB?

ATM and app updates are reflected within a few hours. Branch updates take 1 to 2 working days.

What do I do if I have lost access to my old IOB registered number?

Visit the branch with valid ID proof to update the number manually, as OTP verification on the old number will not be possible.