title: 165 ppi resolution device comes under mdpi or hdpi
body: <p>I have device Display Resolution of 320*480,3.5 inch. So its diagonal resolution is 165 ppi. So this device comes under mdpi or hdpi? </p>
  
  <p>In <a href="http://developer.android.com/guide/practices/screens_support.html#support" rel="nofollow noreferrer">multiple support screen document</a> a table shows the category but, ~160 means minimum 160 0r maximum 160.</p>
  
  <p>From the following image I understand,if device has,</p>
  
  <pre><code>   100 ppi - 140 ppi =&gt; ldpi
     141 ppi - 190 ppi =&gt; mdpi
     191 ppi - 280 ppi =&gt; hdpi
     281 ppi - 280 ppi =&gt; xhdpi
  </code></pre>
  
  <p>I want to know my understanding is correct or wrong? </p>
  
  <p>Also What is the meaning of the tilde(~) symbol in the table?</p>
  
  <p><img src="https://i.stack.imgur.com/0Npt6.png" alt="Screen densities"></p>