Android Secret Codes FULL LIST with ScreenShot by rafomac

Be careful to use the following codes - there are meant to be a tool for Android developer 

I did all the tests with a Samsung Galaxy Mini and Android 2.3.4 (Gingerbread)

*#1234#

Version

*#*#4636#*#*

This code can be used to get some interesting information about your phone and battery. It shows following 4 menus on screen:

(The information on this screenshot are in Swedish, don't worry, you get it in your own language)

*#*#7780#*#*

Good choice before selling your phone

This code can be used for a factory data reset. It’ll remove following things:

Google account settings stored in your phone

System and application data and settings

Downloaded applications

It’ll NOT remove:

Current system software and bundled applications

SD card files e.g. photos, music files, etc.

PS: Once you give this code, you get a prompt screen asking you to click on “Reset phone” button. So you get a chance to cancel your operation.

*2767*3855#

Think before you give this code. This code is used for factory format. It’ll remove all files and settings including the internal memory storage. It’ll also reinstall the phone firmware.

PS: Once you give this code, there is no way to cancel the operation unless you remove the battery from the phone. So think twice before giving this code.

*#*#34971539#*#*

This code is used to get information about phone camera. It shows following 4 menus:

Update camera firmware in image (Don’t try this option)

Update camera firmware in SD card

Get camera firmware version

Get firmware update count

WARNING: Never use the first option otherwise your phone camera will stop working and you’ll need to take your phone to service center to reinstall camera firmware.

Didn't work with Samsung Galaxy Mini

*#*#7594#*#*

This code can be used to change the “End Call / Power” button action in your phone. Be default, if you long press the button, it shows a screen asking you to select any option from Silent mode, Airplane mode and Power off.

You can change this action using this code. You can enable direct power off on this button so you don’t need to waste your time in selecting the option.

Didn't work with Samsung Galaxy Mini

*#*#273283*255*663282*#*#*

This code opens a File copy screen where you can backup your media files e.g. Images, Sound, Video and Voice memo.

DataCreate

012-013

*#*#197328640#*#*

This code can be used to enter into Service mode. You can run various tests and change settings in the service mode.

Another way to reach SubMenus as a part of the ServiceMenu directly, like: WLAN, GPS and Bluetooth

*#*#232339#*#* OR *#*#526#*#* OR *#*#528#*#* – WLAN test (Use “Menu” button to start various tests)

*#*#232338#*#* – Shows WiFi MAC address

*#*#1472365#*#* – GPS test

Didn't work with Samsung Galaxy Mini

*#*#1575#*#* - Another GPS test

*#*#232331#*#* – Bluetooth test

*#*#232337#*#* – Shows Bluetooth device address