4 ???? 2015/????? ????? ??????? ???????/ ????? ???? ?????? ?????? ???????? ????? NTT DOCOMO ????????? ????? KT ??????? ????? ?????? ??? ??????? ?? ????? ????? ?????? ?? ??? ????????? ????????? ??????? ????? ????? ???? ?????? ?????? ?? ??? ???? ??????.

????? ?????? ??? ?? ??????? ????? ?????? ?? ????????? ????????? ??? ???? ???? ?????? ???????? ??????? ??????? ???? ????? ?? ????????? ?? ????????? ????????? ????????. ?? ??? ?????? ?????? ????????? ????????? ??????? ??? ??????? ????????? ??????? ???? ???? ?????? ???????(?????? ??????? ???? ??????? ???????? ??????????? ???????? ??????? ??? ??????? ????? ???????? ??? ?? ???? ???? ?????? ??????? ?????? ?? ?????? ??????? ????????? ????????) . ?? ????? ????? ????? ?????? ??????? ?? ????????? ?? ??? ????? ???????? ?? ???? ???? ????? ?????? ?????? ????????.

?????? ??????? ??? ???? ?????? ?????? ???????? ?? ???? ??? ???? ??????? ??????????? ?? ???? NTT DOCOMO ????????? ????? KT ??????? ??? ??? 2011. ????? ??????? ??????? ?????? ????? ?? ???? ????? ?????? ?? ????????? ?????????? ?? ??? ??? ??????? ?? ????? ????? ??????? ?????? ???????. ??????? ????? ??????? ?? ????? ????? ?????? ??? ?????? ????? ?????? ???? ????? ???????? ?????? ??????? ????? ?????? ??????? ??????? ???????? ?? ????? ?????? ?????? ????? ??????.