Unknown secret codes for your android mobiles and tabs- Basic codes

In my previous article, i posted about General codes.
Now its the basic codes.

BASIC CODES:

*#*#7780#*#*   - This code is used for factory restore setting.This will remove Google account setting and System and application data and settings.

*2767*3855#   -  This code is used for factory format, and will remove all files and settings including the internal memory storage. It will also re install the firmware.

*#*#4636#*#*   - This code show information about your phone and battery.

*#*#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.

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

*#*#7594#*#*   -  This code enable your "End call / Power" button into direct power off button without asking for selecting any option(silent mode, aero plane and power-off).

*#*#8255#*#*  -  This code can be used to launch G Talk Service Monitor.

*#*#34971539#*#*    -  This code is used to get camera information. Please avoid update camera firmware option.