Two-Factor Authentication for Apple ID

Question 1

What are some characteristics of two-factor authentication?

Answer 1

If you already use two-factor authentication, you can no longer turn it off . You can only unenroll within two weeks of enrollment.

It’s available for devices with iOS 9 and later / macOS El Capitan and later

source: https://support.apple.com/en-us/HT204915

Question 2

How do you turn on 2FA?

Answer 2

iOS: Settings > name > Password & Security > Tap Turn on Two-Factor Authentication

macOS: System Preferences > Apple ID > Password & Security > Click Turn On …

Source: https://support.apple.com/en-us/HT204915