Android SMS Not Sending Internationally

I live in Turkey. I can send sms to local numbers with this method:

public void sendSMS(String phoneNumber, String message) {
Log.i("NO", phoneNumber);
        PendingIntent sentPI = PendingIntent.getBroadcast(this, 0, new Intent(
                SENT), 0);

        PendingIntent deliveredPI = PendingIntent.getBroadcast(this, 0,
                new Intent(DELIVERED), 0);

        SmsManager sms = SmsManager.getDefault();
        sms.sendTextMessage(phoneNumber, null, message, sentPI, deliveredPI);

    }

But when I change the number to international number, SMS seems to be sent like before, but does not reach to that international number. I dont get any exception neither.

Note: I have tried sending manually from Android default messaging application. Message was received then. So I dont think it is because of the operator.

What do you think? How is this possible?

UPDATE: Tried sending sms to a friends Greek number, sms was received. Problem goes on with Iraq number. If you have non-turkish, non-greek number and wish to volunteer please send me a message/mail including your number so I can check with yours.

Solution

After few tests, it turns out nothing wrong with the code, well at least with Android part. It was because of SMS receiver software on the target device which means I had been sending the SMS for sure.

Thanks