Open up a project in Xcode and click on the device near the Run ▶ button at the top left of your Xcode screen. Simulator is in quotes here since this will create an actual app on your phone it’s no longer a simulation.
How to select your iPhone as the “Simulator” Device This post will walk through how to run the Xcode simulator on your iPhone or other iOS device and show you how to fix some common errors you’ll see along the way. For these examples and more you’ll need to test and debug your app using a real device. Maybe you want to test how your application works with the device camera or send an SMS message from your application. There are some features of iOS apps that don’t work from the iOS simulator.
