[QC] Tu 6/6/2014, Viettel trien khai goi cuoc ngay DC5 cho thue bao Dcom tra truoc. Chi voi 5.000d, co 1GB mien phi, su dung trong 24h ke tu thoi diem dang ky (het 1GB, cuoc truy cap 9.76d/50KB). De dang ky, soan DC5 gui 191. L/H: 1818 (200d/phut). Tu choi tin nhan, soan TC gui 199.