xcode版本是12.4，用xcode真机调试，同一个应用，相同的代码，再13.4..1上面能正常打开，再ios14.4的手机手机上面运行正常，断开与xcode的链接就打不开了
ios14.4真机调试以后，应用打不开
This problem is very simple. In IOS 14, if you disconnect Xcode to run independently, you need to change the Xcode project to profile or release mode, compile and run, and then disconnect to run independently. However, even in this way, there is a time limit for non paid developers to run after compilation, and they will not be able to open after a certain time.