title: Installing a TestFlight app on iOS iPhone Simulator - Registration Failed
body: <p>I'm attempting to install a TestFlight app on XCode's iOS simulator using the iPhone simulator.  The link to the TestFlight app takes me to a page that says "This device will need to be registered before it can install betas."</p>
  
  <p>There is a friendly Register button.  When I click the register button, it says "Registering Device" and then it takes me to the iPhone's General settings page.  If I navigate back to the TestFlight page, it says "Registration Failed."</p>
  
  <p>Does anyone know of a way to install a TestFlight app on the iPhone Simulator?  Thanks.</p>