title: Android How to check device/tablet support calling functionality
body: <p>In my app there is a calling functionality. On click of "Call" button, app will launch the phone dialer with phone number. </p>
  
  <p>Now if any of the device/tablet is not having the calling functionality, in that case i want to check this</p>
  
  <pre><code>if(isSupportCalling) 
        //launch dialer
  else 
       //show message
  </code></pre>
  
  <p>inorder to avoid any application crash.</p>
  
  <p>As this permission will only allow android play to make it visible and able to download/install the app on device/tablet which don't support calling functionality.</p>
  
  <pre><code>&lt;uses-feature 
          android:name="android.hardware.telephony" 
          android:required="false"/&gt;
  </code></pre>
  
  <p>As i had seen very few threads on SO related to this, but didn't find a reliable way to this.</p>