title: click on a label in Swift
body: <p>I want to make the label that on click on it to make call to number. I know that iOS has this option, but how can I do it in Swift?</p>
  
  <p>I found just how to do it in ObjC:</p>
  
  <pre><code>-(IBAction)callPhone:(id)sender {
  [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel:2135554321"]];
  }
  </code></pre>
  
  <p>Can anyone help me with it?</p>