NOTE:... pls be informed dat some of d codes may nt work on ur device.
It all depends on d brands.
Here are the codes enjoy!!!
Hidden Secret Android Codes*#*#778O#*#* = Factory Data Reset
*#*#I472365#*#* = Quick GPS Test
*#*#0673#*#* OR *#*#0289#*#* = Audio Test
*#*#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#*#* = wireless Lan Test
*#*# 1575#*#* = Different GPS Test
*#*#4636#*#*‘ = Complete Information About your Phone
