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All Samsung Secrets Codes One of the most popular practices amongst software developers is to leave ‘backdoors’ within the code, which essentially allow anyone with knowledge to get into the system at a much deeper level than you’d expect from an end-user. These backdoors aren’t always with a malicious intent; most of the time, they allow the OEM or programmer to get into the system for troubleshooting when other, usual modes of access have been blocked. They can be quite friendly and helpful if you know what you’re doing. Smartphones have a good share of these as well, where they’re generally known as secret codes. Most of the time, these numeric/symbolic sequences allow you to access hidden menus, diagnostic tests, areas that could change some of the most basic parameters of your device and whatnot. These secret codes, in fact, have not been exclusive to smartphones, but have long been a part of the dumb-phones and then the feature-phones before most major OEMs joined the smartphone bandwagon. For those devices that run Android, certain codes are shared across the board, and hence, can be used on a variety of devices. What follows is a collection of some of the secret codes common to the Android platform. All of these would be entered through the phone dialer (just punch in the sequence as shown). Since most hidden menus are manufacturer specific, there’s no guarantee that they’ll work across all Android smartphones, but you can try them out nevertheless on your Samsung, HTC, Motorola, Sony and other devices. Be advised, though, that some of these can cause serious changes to your device’s configuration, so don’t play with something that you don’t fully understand. *#*#4636#*#* phone information *2767*3855# hard reset *#*#7780#*#* factory reset *#*#7594#*#* change end call/power option *#*#197328640#*#* service mode *#*#273283*255*663282*#*#* file copy screen (backup media files) *#*#526#*#* wlan test *#*#232338#*#* shows wifi mac address *#*#1472365#*#* gps test *#*#1575#*#* another gps test *#*#232331#*#* bluetooth test *#*#232337#*# shows bluetooth device address *#*#8255#*#* gtalk service monitor Samsung Secrets Code *#*#0283#*#* packet loopback *#*#0*#*#* lcd test *#*#0673#*#* melody test *#*#0842#*#* device test (vibration test and backlight test) *#*#2663#*#* touch screen version *#*#2664#*#* touch screen test *#*#0588#*#* proximity sensor test *#*#3264#*#* ram version Samsung Secrets codes to get firmware version information: *#*#4986*2650468#*#* pda, phone, h/w, rfcalldate *#*#1234#*#* pda and phone *#*#1111#*#* fta sw version *#*#2222#*#* fta hw version *#*#44336#*#* pda, phone, csc, build time, changelist number *#272*IMEI# - To change the salescodes and reset the user data