A build only device cannot be used to run this target

Question

I get this error when I trying to test an app.

A build only device cannot be used to run this target.

No supported iOS devices are available

Answer 1

I fixed this issue for emulator,

Firstly check your emulator list

Window > Devices and Simulators

after choose any device and click check OS Version

If you have only Apple Watch OS, You should download new IOS Simulator

and click download more simulator runtimes..

choose your correct IOS Simulator and download it.