title: ios universal app only show 3.5 inches screen instead of 4 inches screen
body: <p>I have an app designed for universal devices.And I have all of the different dimensions of the launch images and app icons ready.</p>
  
  <p>It was fine running on iphone 4, iphone 5  with iOS 7 devices and iphone 5 with ios 6.1</p>
  
  <p>then, i found it was running not full screen (3.5 instead of 4 inches ) on the new ipod 5th generation with latest ios 7.</p>
  
  <p>i update the project to use Images.xcassets then the problems solved.the app was running full screen.</p>
  
  <p>However, it started only runs 3.5 inches (not full screen app) on iphone 5 with ios 6.1</p>
  
  <pre><code>[[UIScreen mainScreen] bounds].size.height
  </code></pre>
  
  <p>return 480 instead of 568</p>
  
  <p><img src="https://i.stack.imgur.com/XVTbs.png" alt="image asset"></p>
  
  <p>Any ideas ?</p>