Image display problem on Blackberry device

Question

I am downloading an image(png) from Network and trying to display it on the screen. I get the image to display properly on the blackberry simulator(4.5) , but when i download the same image on device its all messed up.

Here is the code i am using:

 connection = (HttpConnection) Connector.open(url + getConnectionParameters());
    connection.setRequestMethod("GET");
    int responseCode = connection.getResponseCode();
    System.out.println("Response code " + responseCode);
    if (responseCode != HttpConnection.HTTP_OK) 
    {
     requestFailed("Unexpected response code: " + responseCode);
     connection.close();
     return;
    }

    String contentType = connection.getHeaderField("Content-type");
    in = connection.openInputStream();
    final byte[] output=IOUtilities.streamToBytes(in);
    requestSucceeded(output, contentType);


    public void requestSucceeded( byte[] data, String contentType ) 
    {
      System.out.println( "** http callback called" );
     if( data != null && new String( data ).startsWith( "Exception" ) ) {
    System.out.println( "** bitmap data is not suitable.." );
     return;
    }  

    EncodedImage image = EncodedImage.createEncodedImage( data, 0, data.length );

      if( image != null ) 
      setImage( image );
      else 
    System.out.println( "NEtworkImageField - Image downloaded is null!" );