How to Set Up Two-Factor Authentication for Your Apple ID
If you are using two-step verification on your Apple ID, you need to turn it off before setting up two-factor authentication. To do that, sign in to your Apple account on the Apple ID website. In the Security section, click the “Edit” link on the right. Then, click “Turn Off Two-Step Verification”. You will be asked to create new security questions and to verify your date of birth. Once this is complete, you’ll get an email confirming that two-step verification has been turned off for your Apple account.
You can turn on two-factor authentication on any device running at least iOS 9 or OS X El Capitan. We’re going to use an iPhone in our example. However, if you’re using a Mac running OS X El Capitan, go to System Preferences > iCloud > Account Details. Then, click “Security” and click “Turn on Two-Factor Authentication”. Then, follow the on-screen instructions.
Step 1. On an iOS device, tap the “Settings” icon on the Home screen.
Step 2. On the Settings screen, tap “iCloud”.
Step 3. Tap on your account name at the top of the iCloud screen.
Step 4. Sign-in to your iCloud account. Enter your password and tap “OK”.
Step 5. Tap “Password & Security” on the Apple ID screen.
Step 6. On the Password & Security screen, tap “Set Up Two-Factor Authentication”.
Step 7. Tap “Continue” on the Two-Factor Authentication screen.
Step 8. Tap “Turn On Anyway” to continue.
Step 9. On the Phone Number screen, make sure the “Number” field contains a phone number that can be used to verify your identity. Under Verify Using, tap either “Text Message” or “Phone Call” to select the method by which you want to receive verification codes on non-iOS devices (if your phone number isn’t attached to an iOS device). Then, click “Next”.
Step 10. You are returned to the Password & Security screen and Two-Factor Authentication should read “On”. You will also receive an email telling you that your Apple ID is now protected by two-factor authentication.
The next time you log in to a device that isn’t yet a trusted device, you will receive a notification on a trusted device that your Apple ID is being used to sign in to a device (such as an iPad) near an approximate location (based on the IP address of the device being signed into).
If you are the one signing into the device (even if you don’t recognize the location), tap “Allow” on the dialog box on the trusted device to continue logging in to the other device. However, if you do not recognize the location and you (or someone you know and trust) are not the one signing in, tap “Don’t Allow” to prevent anyone else from signing into the other device.
Once you allow the sign in, a verification code displays on the trusted device. You will use this to complete the sign in the other device.