How to Link Mobile Number With Bank Account 2025

Linking your mobile number with your bank account is super important — it helps you get SMS alerts, OTPs, and stay secure.

Why link your mobile number?

When your number is linked, you get instant alerts for debit or credit. That means if someone makes a transaction you didn’t do, you’ll know fast. Also, many digital banking tools like UPI or mobile banking need your phone number for verification.

How to link it — 3 common methods

Here are three simple ways to do it (quick tip: pick the one that suits you):

• Internet or Mobile Banking: Log in to your bank app or net banking → go to Profile or Contact Details → choose “Update Mobile Number” → enter your new number → verify via OTP.
  
   
• ATM: Visit your bank’s ATM with your debit card → enter PIN → look for “Mobile Number Registration” or similar → enter the number → confirm with OTP.
  
   
• Branch Visit: Go to your bank branch, ask for a “Change of Mobile Number” form, fill it with your account details + photo ID, and submit.
  
   

A quick example

Suppose Ravi lost his old SIM and got a new number. He went to his bank’s ATM in the evening, used the “Mobile Number Registration” option, entered his new number, typed the OTP he received — and voila, his bank account was updated by the next morning.

Be aware of fraud risk

• If someone else changes the mobile number on your account, they might get all your OTPs or transaction alerts. That’s risky.
   
• Always make such changes through official bank channels (app, ATM, branch).
   

After changing the number, monitor your alerts carefully for a few days.