Visit your bank branch or log in to your online banking account
Go to the profile, personal details, or contact information section
Select the option to update or change your mobile phone number
Enter your new phone number
Verify the new number using the OTP or verification code sent by the bank
Submit the request
If required, fill out a mobile number change form at the branch
Provide valid identification documents if asked
Wait for the bank to process and confirm the update
Check your account details to ensure the new number has been updated