How to turn on Two Factor authentication on iPad/iPhone
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Two-factor authentication is an extra layer of security for your Apple ID designed to ensure that you're the only person who can access your account, even if someone knows your password.
If you want an added layer of security for your iPhone/iPad, this quick tutorial can help you setup a two factor authentication.
If you want to know how to turn off two factor authentication on your Mac, iOS devices, then this is the video you should watch: https://youtu.be/1_ufGttXrB4
To learn more about two factor authentication for Apple ID, you can visit: https://support.apple.com/en-us/HT204915