How to use the iPhone keychain and what can it do?

The usage of Apple iCloud Keychain is as follows: 1. Go to Settings -iCloud and enter Apple.

ID and password login, here you can see the key chain function; 2. Click the iCloud keychain switch to turn on the keychain function. When using the system for the first time, you will be asked to set the iCloud security code; 3. The password used here refers to using the screen lock password as the iCloud security code. How many digits is the screen lock password, and how many digits is the iCloud security code here. Creating another security code means creating an independent password as the iCloud security code. Click the advanced option, and you can also choose to use complex security code, random security code or not create security code. 4. If the password setting is too simple, such as 123456, the system will not pass and you will be asked to set a complicated password. After setting the password, you will be asked to bind a mobile phone number. After filling in as required, click Next to complete the opening of iCloud keychain function; 5. If you want to use iCloud keychain to restore synchronized data on other iOS devices, you need to use the same Apple on other iOS devices.

ID login iCloud function, then turn on the iCloud keychain switch, click "Use Security Code for Approval" and enter the previously set iCloud security code; 6. Enter the security code, and the system will automatically issue the verification code to the previously bound mobile phone number. Enter the verification code to turn on the iCloud keychain function on the current device. It should be noted that even if you enter the security code incorrectly, you can enter the system to issue the verification code, but after entering the verification code, you will be prompted that the security code is incorrect. You can change the iCloud security code and the bundled mobile phone number by entering the advanced menu of the iCloud keychain. (The iOS version must be upgraded to 7.0.3 or above before it can be used. The iCloud keychain used in this article is only for iOS devices. )