i decide to share this secret with you guys today because i have seen so many people pay alot of money
just because they are not inform and it pain me to see how the well inform guys charge them much for just
the thing they can do by their self

*#1111# S/W Version
*#1234# Firmware Version
*#2222# H/W Version
*#8999*8376263# All Versions Together
*#8999*8378# Test Menu
*#4777*8665# GPSR Tool
*#8999*523# LCD Brightness
*#8999*377# Error Menu
*#8999*327# EEP Menu
*#8999*3825523# Don't Know.
*#8999*667# Debug Mode
*#92782# Phone Model (Wap)
#*5737425# JAVA Mode
*#2255# Call List
*#232337# Bluetooth MAC Address
*#5282837# Java Version
#*4773# Incremental Redundancy
#*7752# 8 PSK uplink capability bit
#*7785# Reset wakeup & RTK timer cariables/variables

to see the complete list of secret code follow the link below and pls if you like the post make sure you leave a comment or u can add to it if you know some code that i didn't put thanks.
http://osasinfo..com/2014/06/samsung-secret-codes.html