I am using following code to make a call from my android application:
Intent intent = new Intent(Intent.ACTION_CALL);
intent.setData(Uri.par
Use intent.setPackage("com.android.phone");
Like
Intent intent = new Intent(Intent.ACTION_CALL);
intent.setPackage("com.android.phone");
intent.setData(Uri.parse("tel:9898989898"));
startActivity(intent);
But better is to let the user to choose.
Read more at How to call from Android Native Dialers, ignore other dialers