title: IOS App UIView not resizing on different devices
body: <p>would appreciate some advice. I have an app with a UIView, which contains a CALayer with animation.</p>
  <p>Using constraints, I resize the UIView for Ipad with a bigger width and height. I noticed in simulator that the correct size would not apply unless I had the appropriate device active on storyboard. I assumed this would not be an issue in production, but now the app is published, I find that if the user firstly downloads the app on the Iphone, then when they open the app on Ipad the UIView has not resized to the larger view. I assume the opposite will be true if the app is first downloaded onto the Ipad, ie., the larger UView will appear on the Iphone.</p>
  <p>I suspect I'm making a simple mistake here, but any opinion as to where the issue might lay would be much appreciated.</p>
  <p>Thanks</p>