Samsung SGH-600 Secret codes

Show IMEI
*#06#
Show Software Version
*#9999#
Show Software Version (instructions)
*#0837#
Show Serial Parameters
*#0001#
Activates the smiley when charging
*#9125#
Battery status (capacity, voltage, temperature)
*#9998*228#
Program status
*#9998*246#
Change Alarm Buzzer Frequency
*#9998*289#
Debug screens
*#9998*324#
Watchdog
*#9998*364#
EEPROM Error Stack - Use side keys to select values. Cancel and ok.
*#9998*377#
Trace Watchdog
*#9998*427#
Change LCD contrast
*#9998*523#
Jig detect
*#9998*544#
Memory status
*#9998*636#
SIM File Size
*#9998*746#
SIM Service Table
*#9998*778#
RTK (Run Time Kernel) errors
*#9998*785#
Run, Last UP, Last DOWN
*#9998*786#
Software Version
*#9998*837#
Test Vibrator - Flash the screenligth during 10 seconds and vibration activated
*#9998*842#
Vocoder Reg - Normal, Earphone or car kit can be selected
*#9998*862#
Diag
*#9998*872#
Reset On Fatal Error
*#9998*947#
Last/Chk
*#9998*999#
Yann debug screen
*#9998*9266#
Software version
*#9998*9999#
Changes serial parameters (s=?, f=0,1, t=0,1)
*0001*s*f*t#