How to set encryption privacy for Apple mobile phone?

Apple's mobile phone comes with mobile phone privacy setting function.

Locate the settings on the phone desktop, and then click Enter.

Click "General" on the setting page to enter-"Access Restriction" to enter the access setting page.

Click "Enable Access Restriction" after entering the interface.

Next, you will enter the "Set Password" interface and "Enter Access Restricted Password" twice to obtain a 4-digit password.

Open the application that needs encryption, and you need to enter a password when you open some programs or request services in the future.