Open the App Store. Find the "App Store" application icon on Apple's mobile phone desktop, and click Open. If the mobile phone does not have an App Store pre-installed, you can download and install it through the search function of the App Store. Search application treasure. Enter "App Treasure" in the search box of the App Store, and then click Search. Find an application named "Application Bao" in the search results. Download and install application treasure.

Click the "Get" button on the App Store page, and then follow the prompts. You may need to enter the password for your Apple ID. The download and installation process of App Bao needs networking. Open the application treasure. After the installation is completed, find the icon of App Store on Apple's mobile phone and click Open. Some settings and authorization operations may be required, such as agreeing to the user agreement, and authorizing the App to access the location, address book and other information.

After completing these steps, the App Store will appear on the main screen of the mobile phone, and you can search and download the required applications in the App Store.