Will be good to have an English interface for expats. Many thanks for your personal response. Nevertheless, Understand that Viettel is the only real supplier whose application does not have English.Viettel cam k?t cho b?n n?n t?ng v?ng ch?c ?? h?c h?i và phát tri?n. Viettel không ng?i trao c? h?i và trách nhi?m cho nh?ng ng??i tr? tu?i ??m nhi