Now use Face ID's "facial path" to authenticate your iPhone, but the scenario where you are prompted for a password / password is not zero. When you restart iPhone, you will require a password, and when you set up iPhone immediately after purchase, you will need to enter the Apple ID password to log in to iCloud.
Recovering the key is a way to prevent forgetting 2-factor authentication of valid Apple ID passwords. You can safely reset your Apple ID password by storing 28 strings randomly generated by iPhone.
However, if you have a trusted device that is password protected (such as other iPhone, iPad, or Mac), you can reset your Apple ID password by clicking change password on the iCloud screen. If your family and friends have iOS 12 or later iPhone and have installed the Apple support application, you can also reset your Apple ID password from there.
Instead, you should avoid using recovery keys to reset Apple ID passwords. After the recovery key is generated, the password reset for the above method is disabled. If you use the recovery key to reset the password, you need a reliable Apple device and phone number (the phone number that was registered when the Apple ID was created), and you must accurately enter 28 recovery keys, including case differences.
If you do not know the recovery key and trusted Apple devices and phone numbers, you will completely lose the means to reset your Apple ID password. Although the security is a bit dwarfed, if there is a situation, you can use the iPhone of family and friends to reset the password, which should be less worrying than keeping the 28-word recovery key strictly. It should be enough to realize the existence of "recovery key".
