I am trying to run an iPad simulator on Xcode, but currently I only have one option when I go to Xcode > Open Developer Tool > Simulator, which launches the iPhone simulator.
How do I launch the iPad simulator?
You should select an iPad device by navigating to
Hardware/Device/[OS version if you have multiple OS versions installed]/[device]
in the simulator's menu.
If there are no iPad devices in the list, follow these instructions:
Click on Hardware/Device/Manage Devices...
Select the Simulators option on the top.
Press the plus (+) sign in the lower-left corner.
Define the name, the device type and the OS version of the new simulator, then click on Create.
For more information, check out Getting started in Simulator.
For bonus points :)
I would also extract the simulator from inside Xcode to make it more accessible.
Applications / Xcode.app ( right click and select "Show Package Contents" )
From this folder Contents / Developer / Applications / Simulator.app
Create a shortcut to that and simulator opens without opening the main Xcode.app
来源：https://stackoverflow.com/questions/48346709/how-do-i-run-an-ipad-simulator-in-xcode