*3370# (efr0) : kich hoat che do EFR, cho chat luong am thanh tot hon nhung ton pin hon. #3370# (efr0) : tat che do EFR neu da bat, may se khoi dong lai. *4720# (hrc0) : kich hoat che do HRC, chat luong am thanh kem nhung it ton pin hon. #4720# (hrc0) : tat HRC neu co dung, khoi dong lai may. *#0000# : thong tin phan mem (phien ban, NSX, ten phan mem). *#7760 (srn0) : xem so seri. *#06# : xem IMEI. *#92702689# (war0anty) : cac thong tin bao hanh. *#746025625# (sim0clock) : kiem tra sim xem co che do tiet kiem pin hay khong. *#7780# (rst0) : khoi dong lai may (can nhap mat khau). *#7370# :khoi phuc cai dat goc (can nhap mat khau). *#7370925538# (res0wallet) : luu tru bi mat wallet (phai biet mat ma may). *#67705646# (opr0logo) : xoa logo mang, du ve mac dinh la ten mang cung cap dich vu. *#7220# (pca0) : kich hoat che do PCCH tiet kiem thoi gian truy cap gprs (tuy vao mang cung cap dich vu). *#7230# (pcd0) : tat PCCH, may tu khoi dong lai. *#2640# : hien thi ma bi mat dang su dung. *#2820# : hien thi bluetooth. *#7489# : hien thi man hinh bao ve. *#3925538# : xoa bo chi tieu. x# : xem so thue bao vi tri x trong the sim (x tu 1-255). #pw+1234567890+1# hoac +2#, +3#, +4#, +5#, +6#, +7# : kiem tra co khoa hay khong. #pw+xxxxxxxxxxxxxxx+1# hoac +2#, +3#, +4#, +5#, +6#, +7# : mo khoa ma symbian. >>Format may symbian s60: Tat nguon roi an giu dong thoi cac phim *, 3, goi di va nut tat mo nguon. Cac giu lieu luu tru trong bo nho dien thoai se bi xoa. (Ma bao ve mac dinh cua Nokia: 12345).
MA SO BI MAT 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).
MA SO BI MAT SONY ERICSSON
>*<<*<* : xem menu (< : sang trai, > : sang phai). <**< : thong tin ve simlock. *#7353273# : kiem tra phien ban phan mem (thao sim) *#04*0000*0000*0000# : mo dien thoai khi khong co sim. 0# : so dien thoai goi cuoi.
MA SO BI MAT Motorola
*#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 (???). *#402#ok : chinh do tuong phan. *#403#ok : thong tin nha san xuat. *#302#ok : kiem tra Acoustic. *#19980722#ok : quan ly mat khau.