If you have a 2FA-required role in NetSuite, you use a phone to obtain verification codes. If you lost your phone, or purchase a new phone, you must clear the settings (the setup information) of your old phone from NetSuite. After resetting your 2FA settings, you must set up your new phone in NetSuite. Even when your phone number remains the same, you cannot transfer an authentication app from one phone to another. You must set up your phone number in NetSuite and install and configure an authentication app on your new phone.
To change your 2FA phone setup in NetSuite:
Before you begin, verify that you have a current backup code available. If you cannot locate your current backup codes, and you are able to log in to NetSuite, generate a new set of backup codes.
Click Reset 2FA Settings in the Settings portlet. You may be required to enter a backup code to complete the reset. A backup code is required if you are logged in from a device that is not a trusted device in NetSuite.
Log out of NetSuite.
Log in to NetSuite with a 2FA-required role. You are prompted to set up your 2FA preferences before you can access NetSuite.
Follow the on-screen prompts to choose your primary and secondary methods for obtaining verification codes.