To resolve this, please update your iPhone to the latest version of iOS. Once updated, you'll be able to complete the verification process smoothly.2. How do I log in with passkey if I've switched to a new iPhone? If you've changed devices, you can still log in by scanning the QR code using a device that supports iOS 18 or above, or any other compatible device. When setting up a new passkey, we recommend keeping your old device nearby.

If you want to create your passkey on a different device, select Other Options Select iPhone, iPad, or Android device Select iPhone, iPad, or Android device to create a passkey with other mobile devices Use the other device to scan the QR code and complete the authentication Select Security key (only available on iOS devices) Select Security key to create a passkey with your external security key Insert your security key and follow the instructions to create your passkeyVerify with passkey Here's