Samsung phone secret codes

credited to  nyi nay min

*#06# Show IMEI
*#9999# Show Software Version
*#0837# Show Software Version (instructions)
*#0001# Show Serial Parameters
*#9125# Activates the smiley when charging
*#0523# LCD Contrast
*#9998*228# Battery status (capacity, vol***e, temperature)
*#9998*246# Program status
*#9998*289# Change Alarm Buzzer Frequency
*#9998*324# Debug Screens
*#9998*364# Watchdog
*#9998*377# EEPROM Error Stack - Use side keys to select values
*#9998*427# Trace Watchdog
*#9998*523# Change LCD contrast
*#9998*544# Jig detect
*#9998*636# Memory status
*#9998*746# SIM File Size
*#9998*778# SIM Service Table
*#9998*785# RTK (Run Time Kernel) errors - if ok then phn is reset,
info is put in memory error
*#9998*786# Run, Last UP, Last DOWN
*#9998*837# Software Version
*#9998*842# Test Vibrator - Flash the screenlight during 10 sec
and vibration activated
*#9998*862# Vocoder Reg - Normal, Earphone or Carkit
*#9998*872# Diag
*#9998*947# Reset On Fatal Error
*#9998*999# Last/Chk
*#9998*9266# Yann debug screen (Debug Screens?)
*#9998*9999# Software version
*0001*s*f*t# Changes serial parameters (s=?, f=0.1, t=0.1)
*0002*?# unknown
*0003*?# unknown
FOR NEW SGH (R210, T100, A300...)
if code is in format *#9998*xxx#
try write in this *#0xxx#
SGH-600 SGH-2100
*2767*3855# Full EEPROM Reset (THIS CODE REMMOVES SP-LOCK!
but also changes IMEI to 447967-89-400044-0
*2767*2878# Custom EEPROM Reset
D820
Symbian Parte
**04* change code PIN - can use **04*old_pin*new_pin*new_pin#
**042* change code PIN2
**05* Unblock PIN
**052* Unblock PIN 2
*#7780# Restore factory settings-Need lock code
*#7370# Restore factory setting-Deep mode-Need lock code
*#2820# Show bluetooth MAC adress -Same as *#232337#
*#7370925538# Reset settings value in waller app
*#92702689# Show life time of device
Phone part
*#[IMG][/IMG]4# Show soft version
*#1111# Show FTA S/W version
*#2222# Show FTA H/W version
#9998*8376263# Show S/W version
*2767*2878# Custom reset
*2767*927# WAP reset
*2767*63342# Media reset
*2767*5282# Java reset
*2767*3855# Full reset
*#9998*377# Show error log
*#9998*842# Vibrator test
*#9998*782# Show rel time clock
*#9998*3323# Reset the device
*#9998*289# Buzz test
*#9998*523# LCD contrast test
*#9998*8378# Show debug Monitor
*#9998*2886# Toggle auto answer option
*#3888# Enter bluetooth test mode
*#4357# Show help dialog
*#9998*228# Show battery Information
*#4777*8665# retrive GPRS setting value
*#0*# Enter LCD test mode
*#9998*746# Show SIM information
*#9998*778# Show SST information
*#06# Show IMEI