*#*#778O#*#* = Factory Data Reset
*#*#I472365#*#* = Quick GPS Test
*#*#0673#*#* OR *#*#0289#*#* = AudioTest
*#*#2664#*#* = Touch Screen Test
#’#273283*255*663282*#*#* = Backup Media Files
*#*#0283#*#* = Packet Loopback Test
*2767*3855# = Reinstalls The Phones Firmware & Format Your Phone
*#*#232339#*#* OR *#*#526#*#* = WireIess Lan Test
*#*# 1575#*#* = Different GPS Test
*#*#4636#*#*‘ = Complete Info* Enable Test Mode
I hope this codes will help you in using ur smartphone..Enjoy friends!!
