title: SMS verification from application for android
body: <p>I have developed an application where I want to do sms verification of the user who is using the application from the same number from which he is registering. Right now I have released the application only for India. I need to know whether I need to put country code if I want to go for other countries. Like right now am able to send sms from users phone without country code. So do I really need country code to send the sms from the phone.
  I have used following code to send the sms.</p>
  
  <pre><code> SmsManager sms = SmsManager.getDefault();
          String smsTxt = "Please enter " + string
                  + " into Myapp for verification.";
          sms.sendTextMessage(phno2, null, smsTxt, null, null);
  </code></pre>
  
  <p>For the above code I haven't put any country code. Do i really need the country code.</p>