????? ????? ??? ???? ???? ???? ?????. ??? ???? ?? ???? ????? ??? ???? ? ??? ???? ??, ??? ??? ?? ???? ??? ???? ?????.??? ?? ???? ?????? ??? ????? ???? ??? ??? ???? ??? ???.To cater for the cellular-savvy inhabitants of Busan, “??” has developed a cellular-only app. This app provides location-based providers, which makes it very convenient for en