Register my mobile number is for my ATM card

We would like to explain to you should go to the bank in order to change the number or add the number to your bank account, this is how to do it to activate the SMS service with the bank.
Some banks also allows you to change or add the number through the phone application, online banking services, or through the bank's teller card and ATMs.
Therefore, we recommend you to review the bank for a change, or check out the phone application if there is a service to update or modify your information.