Samsung Secret Codes
#06# (Display IMEI number)
#1234# (Display current firmware)
##4636## (Diagnostic and general settings mode)
##7780## (Factory soft reset)
or #7780#
27673855# (Factory hard reset to ROM firmware default settings)
27674387264636# (To display product code)
#272imei# (Display/change CSC code)
or #272HHMM#*
##1472365## (GPS test settings)
##197328640## (Service mode main menu)
#12580369# (SW & HW Info)
*#232337# (Bluetooth Address)
*#232331# (Bluetooth Test Mode)
*#232338# (WLAN MAC Address)
*#0228# (ADC Reading)
*#32489# (Ciphering Info)
*#2263# (RF Band Selection)
*#9090# (Diagnostic ConfiguratioN)
*#7284# (USB I2C Mode Control)
*#232339# (WLAN Test Mode)
*#0842# (Vibra Motor Test Mode)
*#0782# (Real Time Clock Test)
*#0673# (Audio Test Mode)
#0# (General Test Mode)
*#872564# (USB Logging Control)
*#4238378# (GCF Configuration)
*#0283# (Audio Loopback Control)
*#1575# (GPS Control Menu)
*#3214789650# (LBS Test Mode)
*#745# (RIL Dump Menu)
*#03# (NAND Flash S/N)
#0589# (Light Sensor Test Mode)
#0588# (Proximity Sensor Test Mode)
#2732832553282# (Data Create Menu)
*#34971539# (Camera Firmware Update)
#526# (WLAN Engineering Mode)
#746# (Debug Dump Menu)
#9900# (System Dump Mode)
#44336# (Sofware Version Info)
#273283255663282# (Data Create SD Card)
#3282727336# (Data Usage Status)
#7594# (Remap Shutdown to End Call TSK)
#0289# (Melody Test Mode)
#2663# (TSP / TSK firmware update)
#528# (WLAN Engineering Mode)
#7412365# (Camera Firmware Menu)
or ##34971539##
#80# (Unknown)
#07# (Test History)
#3214789# (GCF Mode Status)
#272886# (Auto Answer Selection)
#8736364# (OTA Update Menu)
#301279# (HSDPA/HSUPA Control Menu)
#7353# (Quick Test Menu)
27674387264636# (Sellout SMS / PCODE view)
#7465625# (View Phone Lock Status)
7465625782# (Configure Network Lock NSP)
746562527# (Insert Network Lock Keycode NSP/CP)
#746562527# (Insert Content Provider Keycode)
#7465625782# (Insert Partitial Network Lock Keycode)
746562577# (Insert Network Lock Keycode SP)
#746562577# (Insert Operator Lock Keycode)
7465625638# (Configure Network Lock MCC/MNC)
#7465625638# (Insert Network Lock Keycode)
Source:https://rehanhub.com/check-samsung-secret-codes