toi moi mua may 5610 muíc nhu trong huong dan la ho tro the toi 4G nhung toi chi sai the 2G nhung may chay vao truong trinh chay rat cham thinh thuong vao phan nhac may hay bi dung phai doi 2 phut may moi khoi dong lai va nghe nhac dc khob hieu sao vay nho cac bac chuyen gia gop y cho toi cam ong nieu