title: IOS difference in using Compact Regular and Compact Any Size classes
body: <p>I had made an application on ios for iphones portrait mode only by
  using Compact Any Size Classes .. its working perfectly on types of phones. </p>
  
  <p>But XCode storyboard prefers to use <strong>compact Regular Size classes</strong> for all iphone portrait mode. </p>
  
  <p>I am unable to differenciate in them .. if I am using wrong size classes.
  Please someone explain with detail and reasons that which size classes I should use.</p>
  
  <p>I had Read that storyboards using Any| Any size classes will work on all screen sizes including iphone 6 plus and ipad devices.</p>
  
  <p>So why should it not Compact| any will not preferrable to all iphones in portrait.
  Please guide</p>