Twilio account not working test

Question

I have created test account and using test ID and TOken for sending sms using mvc c# the code excutes successfully but it is not sending any sms .

var accountSid = "AC5e25d8a4266b39ac8769cd1f6ee0c6cc3";
      var authToken = "e8c21c9556cf64a75066f12cfa96c";
      TwilioClient.Init(accountSid, authToken);

      try
      {
         MessageResource.CreateAsync(
            body: "There's always money in the banana stand.",
            from: new PhoneNumber("[phone]"),
            to: new PhoneNumber("[phone]")
        );
      }
      catch (ApiException ex)
      {
        if (ex.Code == 21614)
        {
          Console.WriteLine("Uh oh, looks like this caller can't receive SMS messages.");
        }
      }

I read many articles someone said that for test account the from number need to be fixed like this "[phone]" I did that as well . but it sucessfully run without sending any message when i use their portal to send the message with same credentials it works