Problemas ne recepción de SMS con Java

    public void test(){
        try{
            msgConn = (MessageConnection)Connector.open("mms://:com.mot.oyye");
            send();
            receive();
            msgConn.close();
            msgConn = null;
        } catch(Exception ex){
            getMainForm().append("\nException: " + ex.getMessage() + "\n");
        }        
    }

    public void send() throws UnsupportedEncodingException, SizeExceededException, IOException{
        getMainForm().append("\nSending MMS...\n");
       
        MultipartMessage mms =
                (MultipartMessage)msgConn.newMessage(MessageConnection.MULTIPART_MESSAGE ,
                "mms://5543290287:com.mot.oyye");
       
        mms.setSubject("Test MCT");
       
        MessagePart mp = new MessagePart("TestMessage".getBytes("ISO-8859-1") ,
                "text/plain" , "txt1" , null , "ISO-8859-1");
       
        mms.addMessagePart(mp);
       
        msgConn.send(mms);
       
        getMainForm().append("\nMMS sent successfully!!\n");
       
        mp = null;
        mms = null;
    }

    public void receive() throws IOException{
        MultipartMessage mms = (MultipartMessage)msgConn.receive();
        getMainForm().append("\nMMS arrived!!\n");
        getMainForm().append("MMS Subject: " + mms.getSubject() + " From: " +
                mms.getAddress());
       
        mms = null;
    }