title: Is "mnt/sdcard" always the external storage in Android?
body: <p>In all the devices I have had the sd card has always been mounted on the path <code>/mnt/sdcard</code> (this value is also returned by the function <code>Environment.getExternalStorageDirectory().getAbsolutePath())</code></p>
  
  <p>Can I consider it as a constant or are there cases in which it is different?</p>