File contents are not read completely

I'm having a case where the contents of the file are not read entire, just part of it. Here's the example:

I performed the test to see if the file was correct on the device by opening it without using the totalcross and the file is complete.

In case you require a copy of the file, I will forward it by email. The same has: 20k.

public class DSINTesteMainWindow extends MainWindow {

public DSINTesteMainWindow()
{
    super("Teste", Window.NO_BORDER);

    Convert.setDefaultConverter("UTF8");
}

public void initUI()
{

    try {
        Vm.debug(new String(new File("/sdcard/dsin/20170526143838985", File.READ_ONLY).readAndClose()));
    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}}