How do I print arabic characters in android app with thermal printer

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Android

printing

Printer is GoojPRT portable printer PT-210 (thermal printer)

the same code is work on another thermal printer POS but not work on this printer for Arabic characters the English characters is good but the Arabic characters is shown as chinses characters

code for print :

Button btnPrint=(Button)findViewById(R.id.btnPrint);
        btnPrint.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                Thread t = new Thread() {
                    public void run() {
                        try {
                            OutputStream os = mBluetoothSocket
                                    .getOutputStream();
                            BILL = "ENGLISH" + "\n";
                            BILL =  BILL + "العربية" + "\n";
                            BILL = BILL + "---------------" + "\n";
                            
                            os.write(BILL.getBytes( ));
                        } catch (Exception e) {

                        }
                    }
                };
                t.start();
            }
        });

I need to print text not bitmap or image

What I have tried:

try to add encoded as charset " UTF-8 " and not working for Arabic characters
and also tried to Add "ISO-8859-6" encode not working
tried to change the sittings of thermal printer and change code page to "ISO-8859-6" also not working