Android Secret Codes 2015 List (Hidden Codes Chart)

As pointed out from comments these are mostly for Samsung, I have added some for HTC below. Like I said this is just a start we can build form it. If anyone would like to create a Google Doc from this information please feel free I will add a link to this post.

SAMSUNG CODES

Code	Description
**##4636##**	Display information about Phone, Battery and Usage statistics
**##7780##**	Restting your phone to factory state-Only deletes application data and applications
27673855#	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
**##273283255663282##***	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
**##49862650468##***	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
##778 (+call)	Brings up Epst menu

HTC CODES

Code	Description
**##3424##**	HTC function test Program.
**##4636##**	HTC Info menu
**##8255##**	launching GTalk Service Monitor
##3424#	Diagnostic mode.
##3282#	for EPST.
##8626337#	for VOCODER
##33284#	Field trial menu.
##786#	Reverse Logistics Support.
##7738#	Protocol Revision.
##775#	Unknown
##2539#	Unknown

For the s4 I found these codes:

Code	Description
*#1234#	to check software version of phone.
#12580369#	to check software and hardware information.
*#0228#	Battery status (ADC, RSSI reading)
*#0011#	Service Menu
*#0283#	loopback test
*#06#	imei
*#03#	nandflashheaderread
*#0808#	usb service
*#9090#	service mode
*#7284#	FactoryKeystring
*#34971539#	camera firmware standard
*#1111#	servicemode
#0#	Testmodus

Root required for this step. Some codes will work if you have Verizon and no root. Test at your own risk!

(This was a copy and pasta from another site, but still useful information.)

WARNING: Use at your own risk, Ihave not tested all of these codes. I do not know if they will work on yourdevice.

These are not "Android" secret codes. These are "Samsung" secret codes. Except one of two none of them will work on any device other than a Samsung phone.

F.A.Q.

Q: So how do you enter these codes?

A: Enter using the dialer.