How to make direct phone call from my app in android studio

callMobitelBtn.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
        Toast.makeText(HomeActivity.this, "மொபிட்டலுக்கு அழைக்கின்றது", Toast.LENGTH_SHORT).show();
        if(ContextCompat.checkSelfPermission(HomeActivity.this, Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED){
            ActivityCompat.requestPermissions(HomeActivity.this, new String[]{Manifest.permission.CALL_PHONE}, 1);
        }else {
            String dial = "tel:0704*****2";
            startActivity(new Intent(Intent.ACTION_CALL, Uri.parse(dial)));
            callDialog.dismiss();
        }
    }
});