What s wrong with the iPhone can t turn on two factor authentication

Open [Settings] - [iCloud].

Click on the avatar information column under iCloud.

Select Password & Security

Click Set up two-factor authentication

Click Continue

Bind your credit card information.

Enter your mobile phone number.

Finally, the binding can be successful, pay attention to add a few more trusted ** numbers, in case the current mobile phone number is unavailable.

Compared with two-step verification, there are many fewer steps, the 12-digit recovery key is removed, and the verification code has been upgraded from the original 4 digits to 6 digits.

The steps to use Apple iOS two-factor authentication are as follows: 1. Log in to Apple ID and password on a new device or browser, take logging in to iCloud in the iOS system as an example: the system pops up a two-factor authentication dialog box, if the user's Apple ID has been logged in in two or more iOS devices or macOS devices, and the device system version meets the conditions for using two-factor authentication, the other device will receive Apple ID login request and login location (tested in Chinese mainland this location is often displayed abnormally, such as confirming the operation**, it is recommended to directly ignore the login location), click allow after the system will automatically generate a 6-digit verification code; 2. Enter the verification code you just obtained on the new iOS device to complete the two-factor authentication of the Apple ID; 3. If you don't have a trusted device at hand, you can click "Verification code not received" and choose to send the verification code to a trusted mobile phone number, and the system will provide the verification code in the form of SMS or **.

4. If you can't automatically receive the verification code on a trusted device, you can also get it through "Settings", and you can use it on an offline device. a) Go to Settings > iCloud and tap the username of your Apple ID that's signed in. If the current device is in ** state, click "Password & Security" > "Get Verification Code"; b) If your device is offline, tap "Get Verification Code".

The steps for Apple to close the dual recognition card are as follows:

3. Since two-factor authentication is enabled, there will be a layer of authentication on the device when logging in. Durable.

4. Then receive the verification code on the device and fill it in to the browser page.

6. Under the "Security" column, click the "" button.

7. Click "Turn off two-factor authentication".

8. Confirm again in the pop-up dialog box.

9. Because two-factor authentication is turned off, Apple requires three security questions to be reset, and you can log in later to authenticate yourself.

10. Enter security information to facilitate identity verification in the future. Remember to enter it correctly and remember the rescue mailbox.

11. Apple will send a verification code to the rescue mailbox and fill in the verification code to the web page.

12. The rescue mailbox is verified, and the two-factor authentication is closed.

Two-factor authentication is actually easy to understand, and it's an extra layer of security for your Apple ID. With two-factor authentication turned on, others can't access your account, even if Zhichang Wang Liang tells you your password, you can't access it.

For example, if you have two-factor authentication enabled on your device, your device will receive a sign-in request similar to this when someone signs in with your Apple ID to access your account.

At this point, you can choose "Allow" or "Don't Allow", and if you accidentally click "Allow", that's fine. After clicking "Allow", a verification code will appear on the screen, as long as you don't share the verification code with others, your password and your password will be safe.