title: click button to open dial pad, this string for example String str = "*#06#" should be open in dial pad.?
body: <p>My Code is this:</p>
  
  <pre><code>public void onclickdial(View v) {
  String str = "*#06#";
  startActivity(new Intent(Intent.ACTION_DIAL,Uri.parse("tel:"+str)));
  Toast.makeText(getApplicationContext(), str, Toast.LENGTH_SHORT).show(); }
  </code></pre>
  
  <p>but there is a problem only * symbol is displayed on dial screen:</p>
  
  <p><img src="https://i.stack.imgur.com/qwrmp.png" alt="enter image description here"></p>