Because every time you start the simulator, you have to open a project from Xcode first. It’s too troublesome. So I found a solution on the Internet to start the simulator independently without opening Xcode.
1. Display Xcode package content
As shown in the figure below, find Xcode in the application, right click and select display package content.
2. Copy simulator
As shown in the figure below, locate the simulator simulator in the applications directory and copy it.
3. Copy simulator
As shown in the figure below, copy the copied simulator simulator into the application.
In the future, every time you need to start the simulator simulator, you can directly click the simulator in the application to open it.