Android Phone's important Codes

Shows Wi-Fi MAC address:: Dial *#*#232338#*#*

Bluetooth test: Dial*#*#232331#*#*

Shows Bluetooth address:Dial *#*#232337#*#

LCD test: Dial*#*#0*#*#*

Vibration & Back Light test: Dial *#*#0842#*#*

Touch screen version:Dial *#*#2663#*#*

Touch screen test: Dial*#*#2664#*#*

Proximity sensor test:Dial *#*#0588#*#*

RAM version:Dial *#*#3264#*#*

Android Phone GTalk lanuch:Dial *#*#8255#*#*

PDA, Phone, CSC, Build Time,Change list number:Dial*#*#44336#*#*

Android Phone Reset: JustDial *#*#7780#*#*

Android Phone Backup: Dial *#*#273283*255* ­663282*#*#*
 This code opens a file copy screen where you can backup your media files

Android Phone Information:Dial *#*#4636#*#*
You can use this code to get some information about your phone and battery.
It shows phone information, Battery information, Battery history, & Usage statistics.

Android Phone Service mode:Dial *#*#197328640#* ­#*
You can use this code to enter into Service mode
You can run various tests and change settings in the service mode.

Android Phone Camera Information:Dial *#*#34971539#*#*
You can use this code to get information about the camera.It shows following 4 menus.
Update camera firmware in image, Update camera firmware in SD card, Get camera firmware version and Get firmware update count.
WARNING: Never use the first option (Update camera firmware in image) otherwise your camera will stop working and you’ll need to take your phone to service center to reinstall camera firmware

Android Phone Factory Format: Dial *2767*3855#
This code is used for factory format, which will delete all files and settings, including the internal memory storage. It’ll also re install the firmware.
 You can use this code to reset your Android phone back to factory data.
 It’ll remove following things: Google account settings stored in your phone, System and application data and settings, Downloaded applications.