Android Secret Codes

Android Secret Codes :  Android is a worlds most popular mobile operating System.

Device Info
*#*#4636#*#*
Displays-
* Phone information
* Battery information
* Battery history
* Usage statistics

Format Android Smartphone
*2767*3855#
It'll remove all files and settings including the internal memory storage. It'll also reinstall the phone firmware.
Note: Once you give this code, there is no way to cancel the operation unless you remove thebattery from the phone.

Factory Data Reset
*#*#7780#*#*

File Copy for Creating Backup
*#*#273283*255*663282*#*#*

Phone Camera Update
*#*#34971539#*#*
It shows following 4 menus such as:
* Update camera firmware in image (Don't try this option)
* Update camera firmware in SD card
* Get camera firmware version
* Get firmware update count

Service Mode
*#*#197328640#*#*
This can be used to enter into Service mode. You can run various tests and change settings in the service mode.

WLAN, GPS and Bluetooth Test Codes
*#*#526#*#*
OR
*#*#232339#*#*
OR
*#*#528#*#*

WLAN Test
*#*#232338#*#* - Shows Wi-Fi MAC address
*#*#1472365#*#* - GPS test
*#*#232331#*#* - Bluetooth test
*#*#232337#*# - Shows Bluetooth device address

Firmware Version Information
*#*#4986*2650468#*#*
PDA, Phone, H/W, RFCallDate
*#*#1111#*#* - FTA SW Version
*#*#2222#*#* - FTA HW Version
*#*#1234#*#* - PDA and Phone
*#*#44336#*#* - PDA, Phone, CSC, Build Time, Change list number

Factory Tests
*#*#0*#*#*

LCD Test
*#*#3264#*#* - RAM version
*#*#0842#*#* - Device test (Vibration test and Backlight test)
*#*#2663#*#* - Touch screen version
*#*#2664#*#* - Touch screen test
*#*#0588#*#* - Proximity sensor test