title: where is internal storage, phone storage and external storage
body: <p>Here is the files tree of my phone:</p>
  
  <p><img src="https://i.stack.imgur.com/67gq6.jpg" alt="enter image description here"></p>
  
  <p>I've learnt that storage on Android OS is usually broken down into:</p>
  
  <ol>
  <li>Internal storage (device built-in memory)</li>
  <li>Phone storage (device built-in memory)</li>
  <li>External storage (sd card)</li>
  </ol>
  
  <p>I'm looking at the files tree and trying to figure out which is which :). I know that applications by default are installed into <code>/data/data</code> folder, so I assume that <code>/data/</code> folder counts as internal storage. There is also <code>/storage</code> folder which contains <code>sdcard0</code> and <code>sdcard1</code>. I've got only one sdcard on my phone - <code>sdcard1</code>. So maybe <code>sdcard0</code> is phone storage? Could it be that everything, which is outside <code>/storage</code> is considered internal storage?</p>