Follow these steps to change or add the phone number associated with your account.
Enter your email address at https://ID.iowa.gov
Click the "Next" button
Enter your password.
Click the "Verify" button
Please note that if you selected to add an authentication method, you would follow the prompts provided.
Click your name in the upper right hand corner
Select Settings
Go to Personal Information
Click the "Edit" button
Enter Mobile phone
Click the "Save" button
Success!