title: Using Web MIDI API on Android Chrome 52
body: <p>I have worked successfully with Web MIDI API and Chrome 52 on my Mac laptop - for example recognizing connected MIDI instruments. But Web MIDI API does not seem to work or recognize connected instruments when I use Chrome 52 in my Samsung Galaxy S5 running Android 5.0.1. I've tried, for example, Web MIDI API tests online like <a href="https://airtightinteractive.com/demos/webmiditest/" rel="nofollow">this one</a>, unsuccessfully (all of which work fine on the laptop).</p>
  
  <p>Native apps do recognize my MIDI devices just find in my Galaxy phone - they are connected via a working USB OTG cable. But Chrome (or Opera) are not. Any help will be appreciated. I've tried Chrome Dev and Chrome Beta, same result. I wonder if the problem is the phone, or perhaps the Android version?</p>
  
  <p>UPDATE: I have also tried with an Android tablet of different brand and Android 6.0 (Marshmallow). The result is the same: <code>navigator.requestMIDIAccess()</code> is successful (it invokes the <code>success</code> callback with the <code>midiAccess</code> object as expected), but <code>midiAccess</code> has no inputs or outputs, even though a device is connected. The same tablet recognizes the device when using a native app.    </p>
  
  <p>UPDATE 2: Success! The problem was the electronic piano I was using to test. For some reason my laptop Chrome did find my Yamaha piano, but Android Chrome did not (they are the same version of chrome). I moved to another keyboard (a newer Roland piano) and now both Android Chrome and MacOS Chrome now detect it.</p>