title: Make a phone call from UIWebView without prompt
body: <p><strong>SCENARIO<br></strong>
  I have an app that is a <code>UIWebView</code>, I make some url overriding for requirements.</p>
  
  <p><strong>PROBLEM</strong><br>
  To make a call opening <code>url</code> with <code>tel:</code> works weird in <code>iOS7</code> and <code>iOS8</code>, it makes the phone call direct in the background, but it also ask for the confirmation, so user experience is horrible:</p>
  
  <pre><code>[[UIApplication sharedApplication] openURL:request.URL];
  </code></pre>
  
  <p><strong>SOLUTION</strong><br>
  To solve this issue, I used <code>telprompt</code>. It works nice in all <code>iOS</code> versions:</p>
  
  <pre><code>NSURL *url = [NSURL URLWithString:@"telprompt://637****"];
  return [[UIApplication  sharedApplication] openURL:url];
  </code></pre>
  
  <p>But shows this confirmation dialog:</p>
  
  <p><img src="https://i.stack.imgur.com/1mOP5.png" alt="prompt"></p>
  
  <p><strong>QUESTION<br></strong>
  Now, I have a new requirement, to make the phone call without confirmation or prompt. So... <strong>There is some way to make a phone call in <code>iOS</code> omitting the confirmation prompt?</strong></p>
  
  <p>I want something like</p>
  
  <pre><code>NSURL *url = [NSURL URLWithString:@"telnoprompt://637******"];
  return [[UIApplication  sharedApplication] openURL:url];
  </code></pre>