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