Samsung Galaxy Secret Code

Samsung Galaxy Secret Code
*#06# (Display IMEI number)
*#1234# (Display current firmware)
*#*#4636#*#* (Diagnostic and
general settings mode)
*#*#7780#*#* (Factory soft reset)
or *#7780#
*2767*3855# (Factory hard reset to
ROM firmware default settings)
*2767*4387264636# (To display
product code)
*#272*imei#* (Display/change CSC
code)