title: What is the full google voice url for placing calls on iOS?
body: <p>I know that a phone number formatted googlevoice:4155551234 will launch the google voice app on iPhone/iPad.</p>
  
  <p>However, it looks like this will not initiate a phone call from the number passed in. Skype urls look like </p>
  
  <ul>
  <li>skype://4155551234?call, </li>
  </ul>
  
  <p>so naturally I tried </p>
  
  <ul>
  <li>googlevoice:4155551234?call</li>
  <li>googlevoice:4155551234?dial</li>
  </ul>
  
  <p>but to no avail. </p>
  
  <p>Does anyone know which arguments should follow the phone number? Or if the url should have a different format?</p>