Must Read: What You Don’t Know About Your Android Device

This is not new but for the
benefit of those of us that are new to Android Phones or tablets, I’ll show you
important information about your Android device. The question is, do you always
have problem with your Android device? Is the touchscreen of your device less
sensitive? Do you want to format/reset your
device because of virus,
application error or bugs? Regardless of the problem your Android device might
be posing on you, the truth is it can always be solved.

Useful Android
Secret Codes You Should Know
You can download this app from play store Android Secret codes 
Or manually follow the information below;
––> 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 back-up 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 dialing
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 below)
 

– Google account settings stored
in your phone
– System and application data and settings
– Downloaded applications
It will not  remove:
– Current system
software and bundled application
– SD card files e.g. photos, music files, etc.

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

Atleast, with the information
above, you should be able to be the boss of your device instead of rushing to a
nearby.