Em dufng nokia 5200
khi em dang nhap ru`i , may' ko hien len "Cai dat viettel_gprs" gi ca(cac ung dung khc van hien bt)
Roi :error:can't connect !!!!
Login thi phai login so dien thoai hay ten dang nhap o tren trang chu Viettel vay ?
Cac pro giup voi !!!!:-?