title: How to turn on iPhone Retina in iOS Simulator?
body: <p>I built and ran an iOS 4.3 app in Simulator. It initially brings up an iPhone 4 shell. Although all real iPhone 4s have retina display, this simulated iPhone 4 only has a resolution of 320x480.</p>
  
  <p><img src="https://i.stack.imgur.com/ZAuDX.png" alt="iphone simulator"></p>
  
  <p>I look in <code>Hardware &gt; Device</code>. There's a checkmark next to the normal iPhone. So I'm using an iPhone 4 case but displaying normal iPhone resolution? I'm already confused!</p>
  
  <ul>
  <li>iPad</li>
  <li>✔ iPhone</li>
  <li>iPhone (Retina)</li>
  </ul>
  
  <p>I then switch over to <em>iPhone (Retina)</em>. Strangely, it opens iPad with the same 320x480 resolution. Both the shell and the resolution are wrong here! </p>
  
  <p><img src="https://i.stack.imgur.com/bgJrs.png" alt="ipad simulator"></p>
  
  <p>How am I supposed to turn Retina on and off and show it in the right shell?</p>