Mã số bí mật Samsung
*#9998*help# : truy cap menu tro giup.
*#7465626# : tinh trang khoa may.
*#7337# : unlock cho dien thoai doi moi.
*2767*java# : khoi tao java, xoa java dang co.
*2767*media# : xoa nhac, hinh.
*2767*wap# : khoi tao lai thong so wap.
*2767*cust# : tao lai phan mem tu EEPROM.
*2767*full# : tra lai tinh trang xuat xuong.
*#9998*java# : menu cac tinh nang tuong thich java.
*#9999*0# : che do man hinh.
*#9999# : phien ban firm ware.
*#0837# : thong tin cau truc phan mem.
*#8888# : phien ban phan cung.
*#9998*746# : thong tin ve sim.
*#9998*778# : hien thi bang dich vu sim.
*#0523# : do tuong phan.
*#0842# : chuyen sang che do rung.
*#0288# : thong tin tinh trang pin.
*#8999*228# : thong so ly thyet cua pin.
*#9998*377# : xem danh sach cac loi.
*#9998*782# : hien thi lich va dong ho bao thuc.
*#9998*585# : thong tin vung bo nho cam truy cap (NNM).
*#3243948# : tat tinh nang chong nhieu am thanh.
*#0001# : hien thi thong so ve ket noi serial.
*0001*s*f*t# : thay doi cac thong so cua ket noi serial (s = toc do; f = 0, 1; t = 0, 1).
*#9125# : bieu tuong mat cuoi khi sac pin.
*#8999*246# : tinh trang ung dung.
*#8999*289# : thay doi tan so chuong bao thuc.
*#8999*324# : man hinh sua loi (dung cho KTV).
*#8999*364# : bat tinh nang theo doi he thong WATCHDOG - mot ung dung java.
*#8999*427# : xem thong tin do WATCHDOG cung cap.
*#8999*523# : thay doi tuong phan man hinh LCD.
*#8999*636# : tinh trang bo nho.
*#8999*764# : dung luong cua sim. Mot cach kiem tra xem ban dang dung super sim hay khong (super co dung luong 64k).
*#8999*842# : kiem tra tinh nang rung cua dien thoai.
*#8999*862# : hien thi mot so tinh nang khi dung dien thoai voi carkit.
*#8999*999# : lan kiem tra cuoi cung.
*#8999*9266# : mot man hinh sua loi khac.
*#8999*638# : hien thi thong tin ve mang cua nha cung cap dich vu ma ban dang su dung.
*#9998*5646# : thay logo khoi dong.
*#9998*76# : xem ma so san pham.
*#9998*968# : giai dieu dang duoc dung cho tinh nang bao thuc.
(Ma bao ve mac dinh cua Samsung: 1111).