After trying all the suggestions on other forums, I removed everything in my app except the splash page, and a blank unity scene. I have 1 image and 1 line of code on splash scene, it just called SceneManager.LoadScene(1) to load the blank scene. The app is still crashing on what is basically a hello world app now. I have many other apps that work fine with my system setup and the identical iPad on iOS 12. At this point I am thinking it has nothing to do with my app. When building to device Xcode states it stopped due a memory error on Loading.PreloadManager: Loading.PreloadManager (34): EXC_RESOURCE RESOURCE_TYPE_MEMORY (limit=700 MB, unused=0x0) There is no way a 1gb iPad Air is out of memory on a Hello World app. There is some build setting in my unity project that is causing the error. But I copied all the build settings from working apps to this one, and no change. So I think there is some new Xcode option that needs to be set, which is causing this crash.