title: Xcode 5, How to build an app with UI compatible with IOS 6 as well as IOS 7
body: <p>I am using Xcode 5.
  I want to build an app with UI compatible with both IOS 6 as well IOS 7. Can anyone help me with this. App should be compatible with iPhone (3gs), iPhone retina 3.5 and iPhone retina 4.</p>
  
  <p>UI gets distorted when i watch it on iPhone (3GS) having IOS 6.</p>
  
  <p>I have tried enabling Auto layout, But still the problem persists for some of the screens.</p>