I built a 2D game using Unity3d 5.1.1. When i build and run the project with iPhone connected, the game runs fine on the device. But when i select simulator instead of device, i get an error : " does not have an architecture that can execute" . I run the game on iPhone 4S, but cannot run on the iPhone 4S simulator. Similarly, i selected iPhone 6, 5 etc and get this error every time.