title: Sending SMS with Twilio Trial account fail
body: <p>I am getting the error:</p>
  
  <blockquote>
    <p>The From phone number is not a valid, SMS-capable inbound phone number
    or short code for your account.</p>
  </blockquote>
  
  <pre><code>       // Send a new outgoing SMS by POSTing to the Messages resource
         MessageResource.Create(
                  from: new PhoneNumber(fromPhoneNumber), 
                  to: new PhoneNumber(personPhoneNumber), 
                  body: $"Hey!");
  </code></pre>
  
  <p>I have entered 2 phone numbers in <a href="https://www.twilio.com/console/phone-numbers/verified" rel="nofollow noreferrer">verified calls</a>. One used for "from" and one used for "to".</p>
  
  <p>How can I get a valid trial "from" phone number?</p>