*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

*#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 
*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

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)