NOKIA
*efr0# (*3370#) Kich hoat che do EFR, cho chat luong am thanh tot hon nhung ton pin hon!
#efr0# (#3370#) Tat che do EFR (neu da bat) may se khoi dong lai.
*hrc0# (*4720#) Kich hoat che do HRC, chat luong am thanh kem, it ton pin rat nhieu!
#hrc0# (#4720#) Tat HRC (neu co dung). Phai khoi dong lai may!
*#0000# Thong tin phan mem: phien ban, ngay san xuat, ten phan mem.
*#srn0# (*#7760#) Xem so seri cua san pham!
*#war0anty# (*#92702689#) Xem cac thong tin bao hanh cua may!
*#sim0clock# (*#746025625#) Kiem tra SIM xem co che do tiet kiem pin hok!
*#rst0# (*#7780#) Khoi phuc cai dat goc. (Can nhap mat khau)
*#res0wallet# (*#7370925538#) Luu tru bi mat Walle! (phai biet mat ma may)
*#opr0logo# (*#67705646#) Xoa logo mang, dua ve mac dinh la ten mang cung cap DV
*#pca0# (*#7220#) Kich hoat che do PCCCH (tiet kiem thoi gian truy cap GPRS) tuy vao mang cung cap DV
*#pcd0# (*#7230#) Tat PCCCH. May tu dong khoi dong lai!
xxx# Xem so thue bao vi tri xxx trong the SIM (xxx co gia tri tu 1~255)
*#06# Xem IMEI
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