Samsung V200 Secret Codes

Unlock Code
-> *2767*7822573738#

*#9324#
Netmon (press the hangup key to exit) 

*#9998*JAVA#
Edit GPRS/ CSD settings (S100 Only)
 
*#9998*Help#
Help screen/ List of codes
 
*#9998*LOGO#
Change operator Logo 

*#9998*RTC#
RTC Display 

*#9998*Bat#
Battery Status Samsung phone

*#9998*Buz#
Turns Buzzer ON 

*#9998*Vib#
Turns Vibrator ON 

*#9998*LCD#
LCD Contrast 

*#9998*9999#
Softwre Version 

*#9998*8888#
Hardware Version 

*#9998*377#
NVM Error Log (?????) 

*#9998*NET#
SIM Network ID 

*#9998*778#
SIM Serv. Table 

*#9998*SIM#
SIM Info 

*#9998*PN#
Production No. 

*#9998*968#
Reminder Tune 

*#9998*NVM#
Displays Non-Volitile Memory Status 

*#06#
Displays phones I**I No. 
***/// ***/// NOTE /// *** RED COLOR , they appear serious !!! Use at 
own risk !!!

*#9998*2576#
Forces SIM Error 

*#9998*DEAD#
Forces Phone Crash 

*2767*MEDIA#
Resets the medis on the phone (deletes all downloaded pics/tones) 

*2767*FULL#
Resets the EEPRON *DANGEROUS* 

*2767*CUST#
Resets the Custom EEPRON 

*2767*JAVA#
Resets JAV downloads (deletes all downloaded midlits) 

*2767*STACKRESET#
Resets Stack 

*2767*WAP#
Resets WAP Setting & Deletes Favorites

source : samsung-secret-codes.blogspot.com