When you enter the verification code on your new device or the web, you verify that you trust the device on which you're signing in. If you're not the one trying to sign in, tap Don't Allow to block the sign-in attempt. If you know that you're the person trying to sign in but don't recognize the location, you can still tap Allow and view the verification code. This location is based on the new device's IP address and might reflect the network that it's connected to, rather than the exact physical location. The notification might include a map of the approximate location of the sign-in attempt. When you sign in with your Apple ID user name and password for the first time on a new device or the web, you'll receive a notification on your trusted devices that someone is trying to sign in with your Apple ID. If you do, your account is less secure and you can't use features that require a higher level of security. If you updated to two-factor authentication inadvertently, you can turn it off within two weeks of enrollment. If you're already using two-factor authentication with your Apple ID, you can't turn it off. Then tap Upgrade Account Security and follow the onscreen instructions. Tap Continue when you see a prompt to upgrade account security.

Answer your security questions, then tap Continue. On the web: Go to and sign in with your Apple ID.Next to Two-Factor Authentication, click Turn On and follow the onscreen instructions.

On your Mac: Choose Apple menu  > System Settings (or System Preferences), then click your name (or Apple ID).

Then tap Continue and follow the onscreen instructions.

On your iPhone, iPad, or iPod touch: Go to Settings > your name > Password & Security.

If you're not using two-factor authentication for your Apple ID, you can turn it on right on your device or on the web: Learn about the availabilty and minimum system requirements for two-factor authentication We recommend that you use two-factor authentication and protect your device with a passcode (or login password on Mac) and Face ID or Touch ID, if your device supports it. Certain Apple services and features, such as Apple Pay and Sign in with Apple, require two-factor authentication.

Two-factor authentication is the default security method for most Apple IDs. Because just knowing your password isn't enough to access your account, two-factor authentication dramatically improves the security of your Apple ID and the data that you store with Apple. When you sign in with your Apple ID for the first time on a new device or on the web, you need both your password and the six-digit verification code that's automatically displayed on your trusted devices. Two-factor authentication is an extra layer of security for your Apple ID, designed to make sure that you're the only one who can access your account-even if someone else knows your password.

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