*#300# OK Xem phien ban phan mem.
*#301# OK Kiem tra ban phim.
*#303# OK Chuyen sang tieng Anh.
#304*19980722# OK Bat engineering mode.
*#304# OK Tat engineering mode.
*#307# OK Kiem tra engineering mode.
*#311# OK Doi code mac dinh cua may.
*#400# OK ADC, Cal, Val (Tui hok biet cai nay)
*#402# OK Chinh do tuong phan man hinh.
*#403# OK Thong tin tu nha san xuat.
19980722 Quan ly mat khau.
*#302 OK Kiem tra Acoustic.
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