Mostly we are using
mobile phone and we do not know even a single information about it. Telephone Companies also do not give detail information about 
their sets when any one purchase them.So I decided to give you a list of
all Samsung mobile phone codes in detail. These Samsung  codes will work on most Samsung mobile phones
. Below I am giving Samsung code and for which purpose they are used.
*#9125#  
Smiley
*#9999# 
 Software
Version 
*#06# 
IMEI Number
*#0001# 
Serial Number
*#9998*523# 
LCD Contrast 
*#0228# or *#8999*228#  
Battery Info
*#8999*636#  
Display Storage Capacity 
*#8999*778#  
Display SIM Card Information
*#8999*782#  
Show Date And Alarm Clock
*#8999*786#  
The Display During Warning
*#8999*837# 
 Samsung Hardware
Version
*#0523# - *#8999*523#  
Display Contrast 
*#8999*638# 
 Show Network
Information
*#9998*246# 
Battery Status- Memory Capacity
*#9998*324# - *#8999*324#  
Debug Screen
*#9998*842# - *#8999*842#  
Vibration Test
*#9998*289# - *#8999*289#  
Alarm Beeper - Ringtone Test
*#8999*9266# 
 Display Received
Channel Number And Received Intensity
*#8999*364#  
Watchdog ON/OFF 
*#8999*427# 
 WATCHDOG Signal Route
Setup
*2767*3855#  
Full Reset (Caution every stored data will be deleted.)
*2767*2878#  
Custom Reset 
*2767*927# 
 Wap Reset 
*2767*226372# 
Camera Reset (deletes photos)
*2767*688# 
 Reset Mobile TV 
#7263867# 
 RAM Dump (On or Off)
#*4773# 
 Incremental
Redundancy
#*7785#  
Reset wake-up & RTK Timer Variables
#*7200# 
Tone Generator Mute
#*3888# 
 BLUETOOTH Test
Mode
#*7828# 
 Task Screen
#*2562#  
Restarts Phone
#*2565#  
No Blocking? General Defense.
#*3353#  
General Defense, Code Erased.
#*3837#  
Phone Hangs on White screen.
#*3849# 
 Restarts Phone
#*7337#  
Restarts Phone (Resets Wap Settings)
#*2886# 
 Auto Answer ON/OFF
#*7288# 
 GPRS
Detached/Attached
#*7287# 
 GPRS Attached 
#*2077# 
GPRS Switch
#*22671# 
 AMR REC START 
#*22673# 
 Pause REC 
#*22674#  
Resume REC 
#*22675#  
AMR Playback 
#*22676#  
AMR Stop Play 
#*22677#  
Pause Play 
#*22678#  
Resume Play 
#*77261# 
 PCM Rec Req 
#*77262#  
Stop PCM Rec 
#*77263#  
PCM Playback 
#*77264#  
PCM Stop Play 
#*22679#  
AMR Get Time 
#*7666#  
White Screen
#*7693#  
Sleep Deactivate/Activate 
#*2286# 
 Data Battery 
#*2679#  
Copycat Feature Active/Deactivate 
#*3940#  
External Loop-Test 9600 bps 
#*4263#  
Hands Free Mode Activate/Deactivate 
#*2558#  
Time ON 
#*3941#  
External Loop-Test 115200 bps 
#*5176# 
 L1 Sleep 
#*7462#  
SIM Phase 
#*7983# 
 Voltage/Freq 
#*7986# 
 Voltage 
#*8466# 
 Old Time 
#*2255# 
 Call Failed
#*5376# 
 Delete All Sms!!!! 
#*2337# 
 Permanent
Registration Beep 
#*2474# 
 Charging Duration 
#*2834# 
 Audio Path
(Hands-free) 
#*3270# 
 DCS Support
Activate/Deactivate 
#*3282# 
Data Activate/Deactivate 
#*3476# 
 EGSM
Activate/Deactivate 
#*3676# 
 Format Flash Volume!!!
#*4760#  
GSM Activate/Deactivate 
#*4864#  
White Screen 
#*7326#  
Accessory 
#*7683# 
 Sleep Variable 
#*3797# 
 Blinks 3D030300 In
RED 
#*7372#  
Resetting The Time To DPB Variables
*#8999*667#  
Debug Mode
*#92782# 
 Phone Model (Wap)
#*5737425# 
 JAVA Mode
*#2255# 
 Call List
*#232337# 
Bluetooth MAC Address
*#5282837# 
 Java Version
*#8999*8376263#  
All Versions Together
*#8999*8378# 
 Test Menu
*#4777*8665#  
GPSR Tool
*#8999*523# 
 LCD Brightness
*#8999*377#  
Error LOG Menu
*#8999*327# 
EEP Menu
*7465625*228# 
 Active Lock ON
#7465625*228# 
Active Lock OFF
*7465625*28638#  
Auto Network Lock ON
#7465625*28638# 
 Auto Network Lock OFF
*7465625*28782#  
Auto Subset Lock ON
#7465625*28782# 
 Auto Subset Lock OFF
*7465625*2877#  
Auto SP Lock ON
#7465625*2877# 
 Auto SP Lock OFF
*7465625*2827#  
Auto CP Lock ON
#7465625*2827# 
Auto CP Lock OFF
*7465625*28746# 
 Auto SIM Lock ON
#7465625*28746#  
Auto SIM Lock OFF
*#7465625# 
Check the phone lock status
*7465625*638*Code# 
Enables Network lock
#7465625*638*Code#
 Disables Network lock
*7465625*782*Code# 
Enables Subset lock
#7465625*782*Code# 
Disables Subset lock
*7465625*77*Code# 
 Enables SP lock
#7465625*77*Code#  
Disables SP lock
*7465625*27*Code# 
 Enables CP lock
#7465625*27*Code# 
 Disables CP lock
*7465625*746*Code#  
Enables SIM lock
#7465625*746*Code# 
 Disables SIM lock