Log in to your bank’s official net banking or mobile banking app
Go to the profile, settings, or personal information section
Select the option to update or change mobile number
Enter your new mobile number
Verify the new number using OTP sent to the new mobile number
Complete any additional verification required by the bank
Submit the request
Wait for bank approval or activation confirmation
Check SMS or email for confirmation of the update
If online change is not available, use the bank’s customer support or branch request option