title: Enable MTP using ADB
body: <p>How do I enable MTP mode on an Android phone, solely using ADB on the command line?
  The screen cannot be used and I need to access files.
  I have USB debugging enabled, though.</p>
  
  <pre><code>adb shell svc usb setFunction mtp
  </code></pre>
  
  <p>does not work, oddly.</p>