Android Secret Codes.

 Android is the No.1 smartphone operating systems in the world. However, there are enough reasons behind this overnight success story.

Based on the Open Source software theory Android offers numerous flexibility and exclusive features which are yet to be seen in the rivals. For example, Android offers file transfer via Bluetooth, offers portable storage, allow install apps from anywhere, multi-tasking with split screen and many more which several rivals are yet to offer.

Apart from all these, Android also offers several secret codes, which can actually open a new world of smartphone computing for you. These codes are usually a sequence of numbers and symbols and meant to be entered through the usual phone dial pad which you usually use for inputting numbers before placing a call.

Description	Code
Testing Menu	*#*#4636#*#*
Display Info about device	*#*#4636#*#*
Factory Restore	*#*#7780#*#*
Camera Information	*#*#34971539#*#*
Completely Wipe device, install stock firmware	*2767*3855#
Backup all media files	*#*#273283*255*663282*#*#*
Wireless LAN Test	*#*#232339#*#* OR *#*#526#*#*
Change Power button behavior	*#*#7594#*#*
Quick GPS Test	*#*#1472365#*#*
Test mode for service activity	*#*#197328640#*#*
Wi-Fi Mac Address	*#*#232338#*#*
Another GPS test	*#*#1575#*#*
Packet Loopback Test	*#*#0283#*#*
Audio Test	*#*#0673#*#* OR *#*#0289#*#*
Vibration and Backlight test	*#*#0842#*#*
Check touch screen version	*#*#2663#*#*
LCD test	*#*#0*#*#*
Touch Screen test	*#*#2664#*#*
Proximity sensor test	*#*#0588#*#*
RAM version	*#*#3264#*#*
Bluetooth test	*#*#232331#*#*
Field Test	*#*#7262626#*#*
Check Bluetooth device address	*#*#232337#*#
Google Talk service monitoring	*#*#8255#*#*
PDA, Hardware, Phone and RF Call Date info	*#*#4986*2650468#*#*
PDA and Phone firmware check	*#*#1234#*#*
FTA hardware version	*#*#2222#*#*
FTA software version	*#*#1111#*#*
Displays IMEI number	*#06#
Enables voice dialing logging mode	*#*#8351#*#*
Disables voice dialing logging mode	*#*#8350#*#*
Brings up Epst menu	##778 +call
Displays Build time and change list number	*#*#44336#*#*
Remove Google account setting	*#*#7780#*#*
Reinstall the firmware	*2767*3855#
Used to enter into Service mode	*#*#197328640#*#*
Battery Status	*#0228#
Data create menu	*#273283*255*3282*#
Data usage status	*#3282*727336*#
OTA update menu	*#8736364#
RF band selection	*#2263#
Diagnostic configuration	*#9090#
USB 12C mode control	*#7284#
USB logging control	*#872564#
Debug dump menu	*#746#
System dump mode	*#9900#
Shows Build time change list number	*#*#44336#*#*
NAND flash serial number	*#03#
Real time clock test	*#0782#
Light sensor test	*#0589#
Quick test menu	*#7353#
Execute from Emergency dial screen to unlock PUK code	**05***#

Samsung Secret Codes

Display IMEI number	*#06#
Display current firmware	*#1234#
Diagnostic and general settings mode	#*#4636#*#*
Factory soft reset	*#*#7780#*#*
To display product code	*2767*4387264636#
GPS test settings	*#*#1472365#*#*
Service mode main menu	*#*#197328640#*#*
SW & HW Info	*#12580*369#
Bluetooth Address	*#232337#
ADC Reading	*#0228#
RF Band Selection	*#2263#
Ciphering Info	*#32489#
Bluetooth Test Mode	*#232331#
Diagnostic Configuration	*#9090#
WLAN Test Mode	*#232339#
Vibration motor test	*#0842#
WLAN MAC Address	*#232338#
USB I2C Mode Control	*#7284#
Audio Test Mode	*#0673#
General Test Mode	*#0*#
USB Logging Control	*#872564#
GCF Configuration	*#4238378#
Real Time Clock Test	*#0782#
Audio Loopback Control	*#0283#
LBS Test Mode	*#3214789650#
GPS Control Menu	*#1575#
RIL Dump Menu	*#745#
Data Create Menu	*#273283*255*3282*#
Proximity Sensor Test Mode	*#0588#
Camera Firmware Update	*#34971539#
Light Sensor Test Mode	*#0589#
WLAN Engineering Mode	*#526#
Debug Dump Menu	*#746#
NAND Flash S/N	*#03#
Software Version Info	*#44336#
System Dump Mode	*#9900#
Data Create SD Card	*#273283*255*663282*#
Data Usage Status	*#3282*727336*#
TSP / TSK firmware update	*#2663#
Remap Shutdown to End Call TSK	*#7594#
Camera Firmware Menu	*#7412365# and *#*#34971539#*#*
WLAN Engineering Mode	*#528#
Melody Test Mode	*#0289#
OTA Update Menu	*#8736364#
Test History	*#07#
HSDPA/HSUPA Control Menu	*#301279#
Quick Test Menu	*#7353#
View Phone Lock Status	*#7465625#
Auto Answer Selection	*#272886#

HTC Secret Codes

Description	Codes
Device information program	#*#4636#*#*
Field Test	*#*#7262626#*#*
HTC Function Test Program	*#*#3424#*#*
Display Software version	*#*#1111#*#*
Display hardware version	*#*#2222#*#*
Wi-Fi Mac Address	*#*#232338#*#*
Bluetooth Mac Address	*#*#232337#*#
GPS Test	*#*#1472365#*#*
GPS Test 2	*#*#1575#*#*
Bluetooth test	*#*#232331#*#*
Display test	*#*#0*#*#*
Touch Screen version	*#*#2663#*#*
Touch Screen Test	*#*#2664#*#*
Debug UI	#*#759#*#*
Factory format	*2767*3855#