How to Set up Two-Factor Authentication on iPhone
Turning on two-factor authentication on the iPhone will secure both your Apple ID and the features of your iPhone that use your Apple ID. Here’s how to set it up:
How to Add Trusted Devices on iPhone
As an additional security layer, you can opt to use two-factor authentication to sign into your Apple ID only on trusted devices. This means that even if a hacker gets your Apple ID username and password and the one-time-use code, they’d also need physical access to one of your devices to get into your account. Pretty secure! To add a trusted device to your account, follow these steps:
How to Remove Trusted Devices on iPhone
If you’re getting rid of a device that you trusted in the past, you need to remove it from your list of trusted devices. If you don’t, the next owner of the device might be able to access your account. To remove a device from your Trusted Device list:
How to Turn off Two-Factor Authentication on iPhone
Interested in turning off 2FA? You can’t. Once you set up two-factor authentication on iPhone (or any other Apple device), you can’t turn it off. That may sound strange, but it’s actually another security measure. Turning off two-factor authentication would make your devices and your Apple ID less secure and Apple doesn’t want to allow that.
What Is Two-Factor Authentication, and Why Should You Use It?
Two-factor authentication (2FA) is a security system that requires that you have two pieces of information to access an account. The first piece of information, or factor, is a username and password combination. The second factor is usually a randomly generated numerical code. That’s how Apple’s 2FA system works. It uses your Apple ID username and password as the first factor and then randomly generates a code when you try to sign into your account. Because each code can only be used once, the system is harder to break. Two-factor authentication is built into the iOS, macOS, iPadOS, tvOS, and Apple websites.
