Do you have an Android phone or Tablet? Do you want to Are you having problems with your device? Is the touchscreen of your device less sensitive? Do you want to format/reset your device because of virus, application error or bugs?

Here are some useful Android Secret Codes you must know:

––> PHONE INFORMATION:

*#*#4636#*#*

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

––> HARD RESET

*2767*3855#

Think before you dial 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.
NOTE: Once you dial 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.

––> Phone Camera Update:

*#*#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.

––> End Call/Power Button

*#*#7594#*#*

This one is my favorite one. 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.

––> Quick Backup to all your media files

*#*#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.

––> Test Service Mode

*#*#197328640#*#*

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

Below are some important Android USSD codes regarding Wireless Lan Tests, Softwares and Hardwares version:

*#*#528#*#* ––> Wireless Lan Tests

*#*#232338#*#* ––> Displays Wi-Fi Mac-address

*#*#1472365#*#* ––> For a quick GPS test

**#*#1575#*#* ––> A Different type GPS test

*#*#0283#*#* ––> Packet Loop back 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 version

*#*#44336#*#* ––> Displays Build time and change list number

*#06# ––> Displays IMEI number

*#*#8351#*#* ––> Enables voice dialling logging mode

*#*#8350#*#* ––> Disables voice dialling logging mode

**05***# ––> Execute from Emergency dial screen to unlock PUK code (SAMSUNG ONLY)

*#*#7780#*#* ––> Wipe data/factory data reset
It’ll remove the 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 application
– SD card files e.g. photos, music files, etc.
NOTE: Once you dial this code, you
get a prompt screen asking you to click on “Reset phone” button. So you get a chance to cancel your operation.

With the knowledge of the above codes, you should be able to fix some fault on your phone by yourself.

Source: http://nigeriantechzone.byethost8.com/index.php/forum/phones-tutorials/17-useful-android-secret-codes-you-must-know

with all these kind of scary code, after dialing now phone go kuku knock down patapata

Op any code to upgrade RAM? My phone is not as fast as I would want it and it keeps hanging and frustrating when I want to make calls quickly.

Op, does one need to dial all that from a specific network? I tried this *#*#3264#*#* from both my Glo and Airtel lines and the phone is not responding. It is not dialing.

op go sleep none of the code you posted here worked