What s the use of two factor authentication for iPhone?

Turn on two-factor authentication or have a certain protective effect, at least two-step verification or two-factor authentication, the number thief can not modify your current ID password, maliciously locking your machine is nothing more than trying to extort your money, then immediately take emergency measures to change the password, you can unlock it when you log in to iCloud again, if the current mobile phone number can not receive the verification code, use the backup mobile phone number to retrieve it (remember to ensure that more than two trusted mobile phone numbers are turned on) After the two-factor authentication is turned on, When logging in to iCloud, you will be prompted with the current login ID information.

Two-factor authentication is the security level of Apple ID strengthened on the basis of two-step verification, strengthening the protection ID, from the results of the current test, even if the above two protection measures are turned on, you can still lock the machine when you log in to ICOULD** or Find My iPhone (mobile phone software version) on your phone.

How to set up two-factor authentication for iphone7 7plus? For the security of mobile phones, iPhone users will turn on two-factor authentication, the following introduces the Apple 7 7plus two-factor authentication setting tutorial, let's learn about it together!

Apple 7 7plus two-factor authentication setup tutorial:

After the update to the official version, Apple users can use a feature called "two-factor authentication", which is actually a security level for Apple IDs on top of two-step verification.

According to the information provided by Apple, only devices that meet the following conditions can enable two-factor authentication:

iPhone, iPad or iPod Touch with iOS 9 - Mac with OS X El Capitan and iOS - Windows PC with iCloud (Windows) and Windows PC will be able to see the option to set up two-factor authentication on the iPhone via the "Settings - iCloud - Password & Security" path.

1. Click "Set Two-Factor Authentication" at the bottom of the "Password & Account Security" interface.

2. Click Continue.

Although this two-factor authentication has been said for a long time, there are still many friends who don't know what this thing is, and there are even many friends who have not turned on two-factor authentication.

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, no one else can access your account, even if they know your password.

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.

If you want another device to log in to you, you can enter the code into the device that needs to log in.

Here's how it works, as long as someone else is logging in to you, you'll know, and you can decide whether to log in or not.

How to enable two-factor authentication

Two-factor authentication is only available on iOS 9

and above equipment.

iOS and above:

Open Settings - Name - Password & Security, click Turn on Two-Factor Authentication, and then click Continue.

iOS and earlier:

Enter the number you want to use to receive the verification code when you log in, which can be the number you are using now. Choose from SMS and voice codes.

After clicking Next, you will receive an SMS verification code for the ** number you entered, as long as you enter this SMS verification code, you can turn on two-factor authentication.

What should I do if I want to change the ** number that received the verification code?

Sometimes we change the ** number for some reason, and the ** number that we just set to receive the SMS number has to be changed. How to change it?

Click on the " " " in the upper right corner of the ** number you want to delete to remove the number.

After removal, you can directly click "Add Trusted ** Number" and enter it.

Okay, that's all for today, class

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".

Apple Two-Factor Authentication is a security measure used to protect a user's Apple account. It requires the user to enter a password and another verification factor, such as an SMS verification code or a dynamic verification code on a noisy device, when logging in, to ensure that only authorized users can access the account.

Apple's two-factor authentication works by sending a verification code to the user's enrolled device when the user tries to log in. Users will need to enter this verification code to complete the login. This verification code can only be generated on the user's authorized device, so it can effectively prevent hacking and account compromise.

The advantage of Apple's two-factor authentication is that it provides greater security that protects users' personal and financial information. In addition, it protects the user's privacy by preventing unauthorized devices from accessing the user's account.

The downside of Apple's two-factor authentication is that it can add complexity and time to user login. Users enter passwords and verification codes when they log in, which can make the login process more cumbersome. Additionally, if a user doesn't have multiple devices enrolled or doesn't have a network connection, they may not receive a verification code and thus can't complete the sign-in.