Type *#9998*627837793# Go to the 'my parameters' and there you will find new menu where you can unlock phone.(not tested-for samsung C100)
To unlock a Samsung turn the phone off take the sim card and type the following code *#pw+15853649247w# .
Java status code: #*53696# (Samsung X600)
If you want to unlock your phone put a sim from another company then type *#9998*3323# it will reset your phone. Push exit and then push 7, it will reset again. Put your other sim in and it will say sim lock, type in 00000000 then it should be unlocked. Type in *0141# then the green call batton and it's unlocked to all networks. This code may not work on the older phones and some of the newer phones. If it doesn't work you will have to reset your phone without a sim in it by typing *#2767*2878# or *#9998*3855# (not tested)
*2767*688# = Unlocking Code
*#8999*8378# = All in one Code
*#4777*8665# = GPSR Tool
*#8999*523# = LCD Brightness
*#8999*3825523# = External Display
*#8999*377# = Errors
#*5737425# = JAVA Something{I choose 2 and it chrashed}][/b]
*#2255# = Call List
#*536961# = Java Status Code
#*536962# = Java Status Code
#*536963# = Java Status Code
#*53696# = Java Status Code
#*1200# = AFC DAC Val
#*1300# = IMEI
#*1400# = IMSI
#*2562# = ??? White for 15 secs than restarts.
#*2565# = Check Blocking
#*3353# = Check Code
#*3837# = ??? White for 15 secs than restarts.
#*3849# = ??? White for 15 secs than restarts.
#*3851# = ??? White for 15 secs than restarts.
#*3876# = ??? White for 15 secs than restarts.
#*7222# = Operation Typ (Class C GSM)
#*7224# = I Got !! ERROR !!
#*7252# = Oparation Typ (Class B GPRS)
#*7271# = Multi Slot (Class 1 GPRS)
#*7274# = Multi Slot (Class 4 GPRS)
#*7276# = Dunno
#*7337# = EEPROM Reset (Unlock and Resets WAP Settings)
#*2787# = CRTP ON/OFF
#*3737# = L1 Dbg data
#*5133# = L1 Dbg data
#*7288# = GPRS Attached
#*7287# = GPRS Detached
#*7666# = SrCell Data
#*7693# = Sleep Act/DeAct (Enable or Disable the Black screen after doing nothing for a while)
#*7284# = Class : B,C or GPRS
#*2256# = Calibration Info
#*2286# = Battery Data
#*2527# = GPRS Switching (set to: class 4, class 8, class 9 or class 10)
#*2679# = Copycat feature (Activate or Deactivate)
#*3940# = External loop test 9600 bps
#*4263# = Handsfree mode (Activate or Deactivate)
#*4700# = Half Rate (Activate or Deactivate)
#*7352# = BVMC Reg value
#*8462# = Sleeptime
#*2558# = Time ON
#*3370# = EFR (Activate or Deactivate)
#*3941# = External looptest 115200 bps
#*5176# = L1 Sleep
#*7462# = SIM phase
#*7983# = Voltage/Frequenci (Activate or Deactivate)
#*7986# = Voltage (Activate or Deactivate)
#*8466# = Old time
#*2255# = Call ???
#*5187# = L1C2G trace (Activate or Deactivate)
#*5376# = ??? White for 15 secs than restarts.
#*6837# = Official Software Version
#*7524# = KCGPRS
#*7562# = LOCI GPRS
#*7638# = RLC allways open ended TBF (Activate or Deactivate)
#*7632# = Sleep mode Debug
#*7673# = Sleep mode RESET
#*2337# = Permanent Registration Beep
#*2474# = ???
#*2834# = Audio Path
#*3270# = DCS support (Activate or Deactivate)
#*3282# = Data (Activate or Deactivate)
#*3476# = EGSM (Activate or Deactivate)
#*3676# = Flash volume formated
#*4760# = GSM (Activate or Deactivate)
#*4864# = Dunno doesn't work on newer versions
#*5171# = L1P1
#*5172# = L1P2
#*5173# = L1P3
#*7326# = Accessory (I got Vibrator)
#*7683# = Sleep variable (
#*7762# = SMS Brearer CS (Activate or Deactivate)
#*8465# = Time in L1
#*9795# = wtls key
#*2252# = Current CAL
#*2836# = AVDDSS Management (Activate or Deactivate)
#*3877# = Dump of SPY trace
#*7728# = RSAV done# (Everything went to standart but nothing was deleted)
#*2677# = ARM State (None or Full Rate)
*#8999*636# = Have no clue what it is, i see 20 lines
*#9999# = Software version
*#8999*8376263# = HW ver, SW ver and Build Date
*#8888# = HW version
*#8377466# = Same HW/SW version thing
*#7465625# = Check the locks
*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*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
*7465625*228# = Activa lock ON
#7465625*228# = Activa 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
*2767*3855# = E2P Full Reset
*2767*2878# = E2P Custom Reset
*2767*927# = E2P WAP Reset
*2767*226372# = E2P Camera Reset
#*6420# = MIC Off
#*6421# = MIC On
#*6422# = MIC Data
#*6428# = MIC Measurement
#*3230# = Trace enable and DCD disable
#*3231# = Trace disable and DCD enable
#*3232# = Current Mode
#7263867# = RAM Dump (On or Off)
*2767*49927# = Germany WAP Settings
*2767*44927# = UK WAP Settings
*2767*31927# = Netherlands WAP Settings
*2767*420927# = Czech WAP Settings
*2767*43927# = Austria WAP Settings
*2767*39927# = Italy WAP Settings
*2767*33927# = France WAP Settings
*2767*351927# = Portugal WAP Settings
*2767*34927# = Spain WAP Settings
*2767*46927# = Sweden WAP Settings
*2767*380927# = Ukraine WAP Settings
*2767*7927# = Russia WAP Settings
*2767*30927# = GREECE WAP Settings
*2767*73738927# = WAP Settings Reset
*2767*49667# = Germany MMS Settings
*2767*44667# = UK MMS Settings
*2767*31667# = Netherlands MMS Settings
*2767*420667# = Czech MMS Settings
*2767*43667# = Austria MMS Settings
*2767*39667# = Italy MMS Settings
*2767*33667# = France MMS Settings
*2767*351667# = Portugal MMS Settings
*2767*34667# = Spain MMS Settings
*2767*46667# = Sweden MMS Settings
*2767*380667# = Ukraine MMS Settings
*2767*7667#. = Russia MMS Settings
*2767*30667# = GREECE MMS Settings
*335# = Delete all MMS Messages
*663867# = Dump Mm file
#*536961# = WAPSAR enable / HTTP disable
#*536962# = WAPSAR disable / HTTP enable
#*536963# = Serial eable / Others disable
#*53696# = Java Download Mode
#*5663351# = WAP Model ID [Your Model]
#*5663352# = WAP Model ID [SEC-SGHXXXX/1.0]
#*566335# = WAP Model ID [SEC-SGHXXXX/1.0]
*2767*66335# = Check on which model it is
*2767*7100# = SEC-SGHS100/1.0
*2767*8200# = SEC-SGHV200/1.0
*2767*7300# = SEC-SGHS300/1.0
*2767*7650# = Nokia7650/1.0
*2767*2877368# = Reset WAP Model ID to standart
