*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!
*#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



con may SAMSUNG

*#06# Xem IMEI.
*#9999# Hien thi phien ban phan mem!
*#0001# Hien thi cac thong so dung giao tiep may tinh
*0001*s*f*t# Thay doi cac thong so giao tiep may tinh
*2767*3855# Khoi phuc toan bo thong tin trong EEPROM ve mac dinh.
*#8999*246# Xem trang thai chuong trinh.
*#8999*289# Thay doi tan so am thanh canh bao.
*#8999*324# Hien thi man hinh sua loi.
*#8999*377# Hien thi cac loi cua EEPROM.
*#8999*523# Chinh do tuong phan cua man hinh.
*#8999*636# Xem trang thai bo nho.
*#8999*778# Hien thi bang dich vu cua SIM.
*#8999*842# Kiem tra che do rung.
*#8999*9266# Mo man hinh go loi!
*#8999*9999# Phien ban phan mem.
*#9998*228# Kiem tra hoat dong cua pin.
*#0523# Chinh do phan giai man hinh
may MOTOROLA
*#06# Xem IMEI.
*#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

SONY ERICSSON

*#06# Xem IMEI.

> * < < * < * Xem MENU an. (<: sang trai, >: sang phai)
*#7353273# Kiem tra phien ban phan mem( phai rut SIM ra moi lam duoc)

TRUNG QUOC

*#06# Xem IMEI
*#66*# Mo menu an.
*#3646633# Mo menu kiem tra loi.

Thay doi ngon ngu:*#0000# OK: tieng Anh, *#0086# OK: tieng Tau,
*#0084# OK: tieng Viet.