Android hidden secret Codes..

Code	Function
*#*#4636#*#*	Display information about Phone, Battery and Usage statistics
*#*#7780#*#*	Restting your phone to factory state-Only deletes application data and applications
*2767*3855#	It's a complete wiping of your mobile also it reinstalls the phones firmware
*#*#34971539#*#*	Shows completes information about the camera
*#*#7594#*#*	Changing the power button behavior-Enables direct poweroff once the code enabled
*#*#273283*255*663282*#*#*	For a quick backup to all your media files
*#*#197328640#*#*	Enabling test mode for service activity
*#*#232339#*#* OR *#*#526#*#*	Wireless Lan Tests
*#*#232338#*#*	Displays Wi-Fi Mac-address
*#*#1472365#*#*	For a quick GPS test
*#*#1575#*#*	A Different type GPS test
*#*#0283#*#*	Packet Loopback test
*#*#0*#*#*	LCD display test
*#*#0673#*#* OR *#*#0289#*#*	Audio test
*#*#0842#*#*	Vibration and Backlight test
*#*#2663#*#*	Displays touch-screen version
*#*#2664#*#*	Touch-Screen test
*#*#0588#*#*	Proximity sensor test
*#*#3264#*#*	Ram version
*#*#232331#*#*	Bluetooth test
*#*#7262626#*#*	Field test
*#*#232337#*#	Displays bluetooth device address
*#*#8255#*#*	For Google Talk service monitoring
*#*#4986*2650468#*#*	PDA, Phone, Hardware, RF Call Date firmware info
*#*#1234#*#*	PDA and Phone firmware info
*#*#1111#*#*	FTA Software version
*#*#2222#*#*	FTA Hardware verion
*#*#44336#*#*	Displays Build time and change list number
*#06#	Displsys IMEI number
*#*#8351#*#*	Enables voice dialing logging mode
*#*#8350#*#*	Disables voice dialing logging mode