title: Universal iphone, ipad app
body: <p>I'm using scale <code>&lt; 1.1</code>  or <code>&gt; 1.9</code> to differentiate between low res and retina versions:</p>
  
  <pre><code>if (([[UIScreen mainScreen] scale] &lt; 1.1) {}
  if (([[UIScreen mainScreen] scale] &gt; 1.9) {}
  </code></pre>
  
  <p>My question: Are all iPhones that have a scale <code>&lt; 1.1</code> in low-res and all iPads that have a scale of <code>&lt; 1.1</code> in low-res?</p>
  
  <p>All iPhones that have a scale <code>&gt; 1.9</code> retina and all iPads that have a scale <code>&gt; 1.9</code> retina?</p>
  
  <p>It seems to be the case, but there are so many devices out there I just want to be sure.</p>