Samsung Secret Codes:
To unlock your phone put a sim from another company,
Now 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 Button 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)
Other Samsung Codes
*#9998*4357# Help Menu
*#9998*5282# Java menu (GRPS/CSD settings for Java Server)
*#9999#0# Monitor Mode
*#9999# or *#9998*9999# Software Version
*#8888# or *#9998*8888# Hardware Version
*#9998*746# or *#9998*0746# or *#0746# Sim Infos
*#9998*523# or *#9998*0523# or *#0523# Display Contrast
*#9998*842# or *#9998*0842# or *#0842# vibration On
(until you push OK)
*#9998*289#
or *#9998*0289#
or *#0289# Buzzer On
(until you push OK)
*#9998*288#
or *#9998*0288#
or *#0288# Battery & Field Infos
*#9998*377#
or *#9998*0377# Error log
*#9998*778#
or *#9998*0778#
or *#0778# Sim Service table
*#9998*782# show date and alarm clock
*#8999*638# show network information
*#9998*5646# change operator logo at startup
*#9998*76# production number
*#9998*968# view Melody for alarm
*#9998*585# Non-Volatile Memory (NVM)
*#3243948# Digital Audio Interference Off
*#32436837# Digital Audio Interference On