How to set up Apple's 2-factor authentication in iOS 10How do you switch from Apple's two-step to two-factor authentication, how do you set it up, and how do you get verification codes? Here's what you need to know!
Apple originally implemented two-step authentication (2SA) then, more recently, two-factor authentication (2FA) system-wide. The terms are contentious in the security community — some don't consider an out-of-band token to be sufficient as a second factor — but the bottom line is this: If you want something more than just your password to protect your Apple ID for iCloud and iTunes, then this is your best and only option. And iOS 10 makes it easier than ever.
Note: Two-factor authentication is required to use Auto Unlock — automatically logging into your macOS Sierra Mac with your watchOS 3 Apple Watch.
I haven't been able to set up two-factor authentication yet, help!
I know the feeling! Here's the deal. Prior to iOS 10, two-factor would either work immediately or say it wasn't available, but not tell you why.
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How to set up Apple's 2-factor authentication in iOS 10
