title: Xcode 10.2.1 and iOS 12.3 beta
body: <p>Updated Xcode to 10.2.1</p>
  
  <p>Have a customer who is having an issue with my app on iOS 12.3 beta</p>
  
  <p>Xcode 10.2.1 does not have a simulator for the 12.3 beta</p>
  
  <p>How can I install iOS 12.3 beta as a simulator in Xcode?</p>