xin duoc gioi thieu voi tat ca cac ban mot cach su dung gprs mien phi ma co the noi la choi deu mang viettel.rat don gian,ban dung mot sim co 0 vnd trong tai khoan,sau do ban nap vao sim do 50.000 vnd.khi nap tien xong ban dang ki goi D50.thi tai khoan cua ban lai tro ve 0 vnd.nhung cu nhu the,thang nao ban cung bi tru di 50.000 vnd nhung luon duoc cong 300MB luu luong mien phi.cac ban thao tac *102# de kiem tra.chu y sim nay chi dung cho su dung Gprs thoi,nen dung co nap tien vao.neu dung de goi va nhan tin thi mua sim khac nhe.chuc may man!