I got stuck in a problem,let me explains it you- I am making an sms encryption aplication which sends data in binary form,and listens to a particular port. I am using "*SmsManager.sendDataMessage(String destinationAddress, String scAddress, short destinationPort, byte[] data, PendingIntent sentIntent, PendingIntent deliveryIntent)*" for this purpose, but wouldn't be able to send the message it gives NullPointerException . As far as minimum message length of my app is concern goes to 155 bytes after encryption.
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