After the official announcement in WWDC 2020 earlier this year, Apple has finally released enhanced sandbox testing capabilities for developers. For example, with the help of the tool and app store connect, developers can test the in app purchase and other functions on the device in a variety of situations. Now, developers can also test subscription services (including upgrade, demotion, and unsubscribe) on devices running IOS 14 or later, and reset the starter eligibility for test accounts. < / P > < p > from now on, Apple Store connect users with developer accounts can create and manage sandbox tester accounts. < / P > < p > with the enhanced sandbox environment, developers can carry out more comprehensive tests for their IOS 14 applications built on Xcode storekit framework, and even simulate the complete purchase experience of users through sandbox Apple ID. After 12 years, “world class Super project” Shantou Bay Tunnel ushers in a historic breakthrough today