Best Hidden Secret Android Codes!

Best Hidden Secret Android Codes!
1. Complete Information About your Phone 
*#*#4636#*#*
This code is used to get some  really interesting information about  your phone and battery. It shows following 4 menus on screen:
*.Phone information
*.Battery information
*.Battery history
*.Usage statistics
2. Factory data reset
*#*#7780#*#*
This code is used for the factory data reset.
Note: Once you give this code, you get a prompt screen asking you to click on "Reset phone" button. So you get a chance to cancel your operation.
3. Format Android Phone
*2767*3855#
4. Phone Camera Update
*#*#34971539#*#*
This code can be used to get information about phone camera. 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.
5. End Call/Power
*#*#7594#*#*
This one is my favorite one. This code is used to change the "End Call / Power" button action in your phone. By 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.
6. File Copy for Creating Backup
*#*#273283*255*663282*#*#*
This code helps you in opening a File copy screen where you can backup your media files e.g. Images, Sound, Video and Voice memo.
7.  Service Mode
*#*#197328640#*#*
This code can be used to enter into Service mode. You can run various tests and also change settings in the service mode.
8. WL AN, GPS and Bluetooth Test Codes:
*#*#232339#*#* OR *#*#526#*#* OR *#*#528#*#*         
- WL AN test *#*#232338#*#*                  - It Shows WiFi MAC address*#*#1472365#*#*             
-GPS test*#*#1575#*#*                      - Another GPS test*#*#232331#*#*                  - Bluetooth test*#*#232337#*#                    - Shows Bluetooth device address
9. Codes to get Firmware version information:
*#*#4986*2650468#*#*
- PDA, Phone, H/W, RFCallDate*#*#1234#*#*
- PDA and Phone*#*#1111#*#*
- FTA SW Version*#*#2222#*#*
- FTA HW Version*#*#44336#*#*
- PDA, Phone, CSC, Build Time, Change list number
10. Codes to launch various Factory Tests:
*#*#0283#*#*
- Packet Loopback*#*#0*#*#*
- LCD test*#*#0673#*#* OR *#*#0289#*#*
- Melody test*#*#0842#*#*
- Device test (Vibration test and Back Light test)*#*#2663#*#*
- Touch screen version*#*#2664#*#*
- Touch screen test*#*#0588#*#*
- Proximity sensor test*#*#3264#*#*
- RAM version
These were Some of the Secret Hidden Android Codes which I have collected from Various website , if you have any suggestions , please comment below :)