Case one: If you forgot your iCloud Security Code
- If you turned on two-factor authentication, you don’t need an iCloud Security Code and the steps below won’t apply to you. To check if two-factor authentication is turned on, tap Settings > [your name] > Password & Security on your iPhone, iPad, or iPod touch. Or on your Mac, choose Apple menu > System Preferences > iCloud > Account Details.
- If you haven’t turned on two-factor authentication, reset the Security Code for iCloud Keychain or create a new Security Code.
Case two: If Safari won’t save the password for one of the websites that you’re using
Some websites request that passwords not be saved. Safari won’t save or autofill account names and passwords on those sites.
Case three: How to view the passwords stored in iCloud Keychain on my iPhone XS?
- Tap Settings > Accounts & Passwords > App & Website Passwords.
- Use Touch ID when you’re prompted.
- Tap a website to view your password.
Case four: If you want to set up iCloud Keychain on a new device
Make sure that your new device has the latest version of iOS and the latest version of macOS, then try these steps:
- Make sure that you have a strong cellular network connection.
- Check your other devices. If you see a notification, follow the prompts to finish setting up iCloud Keychain.
- Contact Apple Support for more help setting up iCloud Keychain.
Note: To prevent data loss, you’d better back up your important data.
Case five: If you didn’t receive the verification code through SMS
- Make sure that you have a strong cellular network connection on your phone.
- Make sure that your phone number can get SMS messages. To check, ask someone to send you a text message.
- Make sure the correct phone number is associated with your account.
Also read: How to view and download backup to your computer.