Samsung Galaxy S GT-I9000 - Secret Codes

*#*#4636#*#*
for battery and other general setttings like GSM/CDMA
*#*#8255#*#*
for Gtalk service monitor
*#*#7780#*#*
for factory data reset
*#*#34971539#*#*
for information about phone camera (be very careful hitting options here)
*#*#7594#*#*
change the "Power" button action in your phone.
*#*#197328640#*#*
service mode
*#197238640#
service mode
*#0*#
testing mode
*#1234#
display phones current firmware
*#*#1472365#*#*

gps test
*#0011#
network mode/cell info/power info
*#*#0*#*#*
screen test menu
*#7465625#
engineering mode
*#3214789650#
gps service menu for JP3 fw
*#9900#
Sysdump screen.. some sort of way to dump ram and other logs to sd card
*2767*3855#
FACTORY DATA WIPE AND internal SD RESET as soon as you enter # use only if you want wipe your phone
*#*#273283*255*663282*#*#*
Opens a File copy screen where you can backup your media files