title: ionic 2 doesn't detects mobile browser
body: <p>In my ionic 2 app running on a web server and as an android app, I want to detect if the client is </p>
  
  <ol>
  <li>A desktop browser  </li>
  <li>Mobile browser</li>
  <li>Or if it is the app.</li>
  </ol>
  
  <p>With the following code I will only get 'core' for desktop browser and for the android app and the mobile browser (chrome on android, std. browser setup) I will get the same values. (cordova, android, mobile)</p>
  
  <p>I am using following code:</p>
  
  <pre><code>constructor(public plt: Platform) {
     var platforms = this.plt.platforms(); 
  }
  </code></pre>
  
  <p>As in the <a href="https://ionicframework.com/docs/v2/api/platform/Platform/" rel="nofollow noreferrer">API Documents</a> described, I am expecting to get also the value <strong>'mobileweb'</strong>.</p>