How to turn on the Two-Factor Authentication
IMPORTANT!:
Two-factor authentication is currently available to iCloud users with at least one device that’s using iOS 9 or OX X OSX El Capital or later. Learn more.
On your iPhone, iPad or iPod touch:
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Go to Apple menu () > System Preferences
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Click iCloud, then click Account Details. If asked, enter your Apple ID password.
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2. Click Security tab. Then click on Turn On Two-Factor Authentication
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How to turn off the Two-Step Verification
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Verification
Visit URL: https://appleid.apple.com/
Sign in to your account
In the Security, section, look for two-step verification, then see if the feature is off or on. If off, click Edit.
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7. Don’t forget to click Done.
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