i m working on the SMS receiving using AT Commands using JAVA. i m getting the message of one page correctly using AT commands, but as i increase the size of SMS as 2, 3 or bigger pages the alphabets are converted to some thing like this

+CMGL: 0,"REC UNREAD","+923028910082",,"14/05/10,19:32:40+20"

4469616C202A3334352A393333232061757220536972662052732E3230206D65696E20332064696E206B6120696E7465726E65742028333030204D422920686173696C206B6172656E21207777772E776170747269636B2E636F6D2070657220736F6E6773206175722067616D657320656E6A6F79206B6172656E212042616C616E636520636865636B206B206C7965202A39393923206D69

whats the problem i m not getting the right text which i have sent through my mobile phone.

please help me out it very urgent

my function of receiving SMS is as follows

public void send(String cmd) {

    try {

      outputStream.write(cmd.getBytes());

    } catch (IOException e) {

      e.printStackTrace();

    }

  }

public void recieveMessage() throws InterruptedException, IOException{

       send("AT+CMGF=1\r");    //send ok if suport txt msg

        Thread.sleep(100);

        send("AT+CMGL=\"REC UNREAD\"\r");  //return list mesgs received on gsm modem

         byte[] readBuffer = new byte[2048];

                try {

                    InputStream inputStrea = null;

                    inputStrea=serialPort.getInputStream();

                    int numBytes = inputStrea.read(readBuffer);

                    //print response message

                    String st=new String(readBuffer);

                    st=st.trim();

                    System.out.println(st);

                    setRecieveMsg(st);

                } catch (IOException e) {

                }

                send("AT+CMGD=1,4\r");

}