title: Using intent.Action_call for user inputted number
body: <p>Help me modify with necessary changes needed to use the value/string(number) passed by user for phone-calling that string itself </p>
  
  <pre><code>            Intent phnIntent = new Intent(Intent.ACTION_CALL);
              phnIntent.setData(Uri.parse("tel:+91987654321"));
  </code></pre>