Hnay toi xin gioi thieu den cac ban 3 dich vu hot va hoan toan free cua viettel la chuyen cuoc goi, chan cuoc goi, va che do hop hoi nghi
dau tien la che do chuyen cuoc goi cac ban soan tin theo cu phap dk chuyen gui 110 hoan toan free ai ma dk bi tru tien lien he 01692482883 toi tra tien. Sau do soan tin hd chuyen gui 110
va 2dich vu con lai lam theo cu phap tuong la CHAN va GHN
chuyen cuoc goi cho phep ban chuyen cuoc goi den vao thue bao cua ban den thue bao ban muon chuyen. Chan cuoc goi cho phep ban chan chieu goi den tin nhan den, goi di tin nhan di hoac ca 2 cho thue bao cua ban. Ghn cho phep nhieu thue bao dam thoai cung 1luc .neu binh thuong ban chi noi chuyen voi 1thue bao khac va mun nc voi thue bao thu2 thi ban phai giu may nhung voi Ghn thi ko can phai giu may ma con cho phep 2thue bao ma ban phat sinh cuoc goi den dam thoai duoc voi nhau. . . . . . Tks