title: Specify images to 4 inch iOS device
body: <p>I facing some trouble while updating my application to be compatible with 3.5' and 4.0' displays(iPhone 5).When i add graphics(png image) to my view,if the device is 3.5' display everything is showed correctly but when i launch the view in a 4.0' device the image remains the same as 3.5' inch(ex:myimage@2x.png - 640x960px).So how can i change images when the device display is 4.0' so a 640x1136px image would be displayed?</p>
  
  <p>More clearly:</p>
  
  <ol>
  <li>Display = 320x480px   => my image.png</li>
  <li>Display = 640x960px   => myimage@2x.png</li>
  <li>Display = <strong>640x1136px</strong>  => myimage { <strong>HOW DO DISCERN THIS RESOLUTION</strong> } .png</li>
  </ol>