Did you try tapping on the link at the bottom of the screen that says "Can't approve this iPhone?"This...
How the hell do I approve my iPhone X without having a second device from Apple. Been struggling with this since the day I got the phone.
It doesn’t work through the authentication code.. it’s a different process.. plus I don’t want to reset my device.Don’t sign into iCloud during setup. Skip that step and login via Settings once you’ve reached the home screen. At the same time you’ll be able to request an authentication code via SMS.
It doesn’t work through the authentication code.. it’s a different process.. plus I don’t want to reset my device.