Update the phone number
If a phone number that’s associated with your child’s Trump Account has changed, you’ll need to update it with us.
You must wait until your account setup is complete before you can update your account information to something other than what you provided on Form 4547. This includes the email address and phone number through the account settings.
If you can’t receive an SMS code on the old phone number, you can use an alternate method to update the number:
If you’re trying to update the phone number to an international number and live outside the US, contact us to provide additional information.