title: MVC client side validation for PhoneAttribute
body: <p>I have a model:</p>
  
  <pre><code>public class MyModel{
      [Phone]
      public string MyTel { get; set; }
  }
  </code></pre>
  
  <p>in the view:</p>
  
  <pre><code>@model MyModel
  @Html.EditorFor(x =&gt; x.MyTel)
  </code></pre>
  
  <p>the HTML generated:</p>
  
  <pre><code>&lt;input type="tel" value="" name="MyTel" id="MyTel" data-val-phone="The MyTel field is not a valid phone number." data-val="true" class="text-box single-line"/&gt;
  </code></pre>
  
  <p>the client side validation for the MyTel field does not working. How to make this work?</p>