sendTextMessage(phoneNumber, null, message, null, null); always returns success even when message not sent
<p>I tried sms activity using <a href="http://www.mkyong.com/android/how-to-send-sms-message-in-android/" rel="nofollow">this link</a>
but the problem is that it always gives "message sent"
how to know if the message is really sent!</p>

<p>here is code</p>

<pre><code>try {
  SmsManager smsManager = SmsManager.getDefault();
  smsManager.sendTextMessage(phoneNo, null, sms, null, null);
  Toast.makeText(getApplicationContext(), "SMS Sent!",
    Toast.LENGTH_LONG).show();
  //...
}
</code></pre>
