You are able to change your registered phone number(s) within Digital Banking, but there are currently no settings that allow this to be done within Mobile/Tablet Apps. However, during first-time use of multi-factor authentication, you are able to change the phone number(s) you use for authentication. This will allow a Mobile or Tablet Apps-only user to add a new number or change an old number that was set up, so you can log in from the registered phone