Call phone action don't work in swift
<p>Hello I've button action for call number , but when I used it don't call and nothing shows. </p>

<p>My codes under below.</p>

<pre><code>  @IBAction func callPhone(sender: AnyObject) {
        UIApplication.shared().canOpenURL((NSURL(string: "tel://1234567890")! as URL))
    }
</code></pre>

<p>Thank You !</p>