##7780##	Factory restore setting Clear all applications and data. Remove the Google account setting. Remove System, application data, and settings.
27673855#	Reinstall the phone’s firmware. It is used for factory format. Remove all files and settings, including internal storage. Reinstall the firmware.
##197328640##	Enabling the test mode for service activity. It is used to enter into Service mode. You can run and change various tests and settings in the service mode.
##4636##	Phone basic information. Phone usage detail. Battery information.
##34971539##	Information about mobile cameras. Get camera information. Note:- Please avoid update the camera firmware option
##7594##	Changing the power button behavior. Enables the direct power off without asking for selecting any option (silent mode, Aeroplane, and power off).
##273283255663282##*	Create backup to all your media files. Opens file copy screen where you can backup your media files like (images, videos, and audios).
##8255##	For Google Talk service monitoring. Used to launch G Talk Service Monitor.
27674387264636*	Used to display product code.
*#0228#	Used to know Battery Status.
#12580369*	Software and Hardware Info.
*#32489#	Let you know Ciphering Info.
#2732832553282#	Data create a menu.
#3282727336*#	Data usage status.
*#8736364#	OTA update menu.

List Of Android Secret Codes