Samsung unlock codes are different then samsung service codes. You will find all samsung service code:
*2767*688# : For Unlocking Code
*#8999*8378# : For All in one Code
*#4777*8665# : For GPSR Tool
*#8999*523# : For LCD Brightness
*#8999*3825523# : For External Display
*#8999*377# : For Errors
#*5737425# : For JAVA Something
*#2255# : For Call List
Java status
#*536961# : For Java Status Code
#*536962# : For Java Status Code
#*536963# : For Java Status Code
#*53696# : For Java Status Code
#*1200# : For AFC DAC Val
#*1300# : For IMEI
#*1400# : For IMSI
To make white:
#*2562# : For White for 15 secs than restarts.
#*2565# : For Check Blocking
#*3353# : For Check Code
#*3837# : To White for 15 secs than restarts.
#*3849# : To White for 15 secs than restarts.
#*3851# : To White for 15 secs than restarts.
#*3876# : To White for 15 secs than restarts.
#*7222# : For Operation Typ (Class C GSM)
#*7224# : For I Got !! ERROR !!
#*7252# : For Oparation Typ (Class B GPRS)
#*7271# : For Multi Slot (Class 1 GPRS)
#*7274# : For Multi Slot (Class 4 GPRS)
#*7276# : For Dunno
#*7337# : For EEPROM Reset (Unlock and Resets Wap Settings)
#*2787# : For CRTP ON/OFF
#*3737# : For L1 Dbg data
#*5133# : For L1 Dbg data
#*7288# : For GPRS Attached
#*7287# : For GPRS Detached
#*7666# : For SrCell Data
#*7693# : For Sleep Act/DeAct (Enable or Disable the Black screen after doing nothing for a while)
#*7284# : For Class : B,C or GPRS
#*2256# : For Calibration Info
#*2286# : For Battery Data
#*2527# : For GPRS Switching (set to: class 4, class 8, class 9 or class 10)
#*2679# : For Copycat feature (Activate or Deactivate)
#*3940# : For External loop test 9600 bps
#*4263# : For Handsfree mode (Activate or Deactivate)
#*4700# : For Half Rate (Activate or Deactivate)
#*7352# : For BVMC Reg value
#*8462# : For Sleeptime
#*2558# : For Time ON
#*3370# : For EFR (Activate or Deactivate)
#*3941# : For External looptest 115200 bps
#*5176# : For L1 Sleep
#*7462# : For SIM phase
#*7983# : For Voltage/Frequenci (Activate or Deactivate)
#*7986# : For Voltage (Activate or Deactivate)
#*8466# : For Old time
#*2255# : For Call ???
#*5187# : For L1C2G trace (Activate or Deactivate)
#*5376# : For ??? White for 15 secs than restarts.
#*6837# : For Official Software Version
#*7524# : For KCGPRS
#*7562# : For LOCI GPRS
#*7638# : For RLC allways open ended TBF (Activate or Deactivate)
#*7632# : For Sleep mode Debug
#*7673# : For Sleep mode RESET
#*2337# : For Permanent Registration Beep
#*2474# : For ???
#*2834# : For Audio Path
#*3270# : For DCS support (Activate or Deactivate)
#*3282# : For Data (Activate or Deactivate)
#*3476# : For EGSM (Activate or Deactivate)
#*3676# : For Flash volume formated
#*4760# : For GSM (Activate or Deactivate)
#*4864# : For Dunno doesn't work on newer versions
#*5171# : For L1P1
#*5172# : For L1P2
#*5173# : For L1P3
#*7326# : For Accessory (I got Vibrator)
#*7683# : For Sleep variable (
#*7762# : For SMS Brearer CS (Activate or Deactivate)
#*8465# : For Time in L1
#*9795# : For wtls key
#*2252# : For Current CAL
#*2836# : For AVDDSS Management (Activate or Deactivate)
#*3877# : For Dump of SPY trace
#*7728# : For RSAV done# (Everything went to standart but nothing was deleted)
#*2677# : For ARM State (None or Full Rate)
*#8999*636# : For Have no clue what it is, i see 20 lines
*#9999# : For Software version
*#8999*8376263# : For HW ver, SW ver and Build Date
*#8888# : For HW version
*#8377466# : For Same HW/SW version thing
To know Locking status:
*#7465625# : For Check the locks
*7465625*638*Code# : For Enables Network lock
#7465625*638*Code# : For Disables Network lock
*7465625*782*Code# : For Enables Subset lock
#7465625*782*Code# : For Disables Subset lock
*7465625*77*Code# : For Enables SP lock
#7465625*77*Code# : For Disables SP lock
*7465625*27*Code# : For Enables CP lock
#7465625*27*Code# : For Disables CP lock
*7465625*746*Code# : For Enables SIM lock
#7465625*746*Code# : For Disables SIM lock
*7465625*228# : For Activa lock ON
#7465625*228# : For Activa lock OFF
*7465625*28638# : For Auto Network lock ON
#7465625*28638# : For Auto Network lock OFF
*7465625*28782# : For Auto subset lock ON
#7465625*28782# : For Auto subset lock OFF
*7465625*2877# : For Auto SP lock ON
#7465625*2877# : For Auto SP lock OFF
*7465625*2827# : For Auto CP lock ON
#7465625*2827# : For Auto CP lock OFF
*7465625*28746# : For Auto SIM lock ON
#7465625*28746# : For Auto SIM lock OFF
E2P SETTING
*2767*3855# : For E2P Full Reset
*2767*2878# : For E2P Custom Reset
*2767*927# : For E2P Wap Reset
*2767*226372# : For E2P Camera Reset
#*6420# : For MIC Off
#*6421# : For MIC On
#*6422# : For MIC Data
#*6428# : For MIC Measurement
#*3230# : For Trace enable and DCD disable
#*3231# : For Trace disable and DCD enable
#*3232# : For Current Mode
#7263867# : For RAM Dump (On or Off)
WAP SETTINGS
*2767*49927# : For Germany WAP Settings
*2767*44927# : For UK WAP Settings
*2767*31927# : For Netherlands WAP Settings
*2767*420927# : For Czech WAP Settings
*2767*43927# : For Austria WAP Settings
*2767*39927# : For Italy WAP Settings
*2767*33927# : For France WAP Settings
*2767*351927# : For Portugal WAP Settings
*2767*34927# : For Spain WAP Settings
*2767*46927# : For Sweden WAP Settings
*2767*380927# : For Ukraine WAP Settings
*2767*7927# : For Russia WAP Settings
*2767*30927# : For GREECE WAP Settings
*2767*73738927# : For WAP Settings Reset
MMS SETTING
*2767*49667# : For Germany MMS Settings
*2767*44667# : For UK MMS Settings
*2767*31667# : For Netherlands MMS Settings
*2767*420667# : For Czech MMS Settings
*2767*43667# : For Austria MMS Settings
*2767*39667# : For Italy MMS Settings
*2767*33667# : For France MMS Settings
*2767*351667# : For Portugal MMS Settings
*2767*34667# : For Spain MMS Settings
*2767*46667# : For Sweden MMS Settings
*2767*380667# : For Ukraine MMS Settings
*2767*7667#. : For Russia MMS Settings
*2767*30667# : For GREECE MMS Settings
*335# :To Delete all MMS Messages
*663867# : For Dump Mm file
#*536961# : For WAPSAR enable / HTTP disable
#*536962# : For WAPSAR disable / HTTP enable
#*536963# : For Serial eable / Others disable
#*53696# : For Java Download Mode
#*5663351# : For Wap Model ID
#*5663352# : For Wap Model ID
#*566335# : For Wap Model ID
*2767*66335# : To Check on which model it is
*2767*7100# : For SEC-SGHS100/1.0
*2767*8200# : For SEC-SGHV200/1.0
*2767*7300# : For SEC-SGHS300/1.0
*2767*7650# : For Nokia7650/1.0
*2767*2877368# : For Reset WAP Model ID to standart
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