By : 
Here Are Some Codes which when you type in your dialer will show the respective response given below ….
1. Complete Information about your phone :-
*#*#4636#*#*
This above code will give you information like the Battery,Phone,Usage.
After tyoing it it give Following menu
1.Phone information 2.Battery information 3.Battery history 4.Usage statistics
2. Service Mode :-
3. Codes to launch Factory Tests :-
Packet Loopback – *#*#0283#*#*
LCD test – *#*#0*#*#*
Melody test – *#*#0673#*#* OR *#*#0289#*#*
Device test (Vibration test and BackLight test) – *#*#0842#*#*
Touch screen version – *#*#2663#*#*
Touch screen test – *#*#2664#*#*
Proximity sensor test – *#*#0588#*#*
RAM version – *#*#3264#*#*
4. Codes to get Firmware version information :-
PDA, Phone, H/W, RFCallDate – *#*#4986*2650468#*#*
PDA and Phone – *#*#1234#*#*
FTA SW Version – *#*#1111#*#*
FTA HW Version – *#*#2222#*#*
PDA, Phone, CSC, Build Time, Changelist number – *#*#44336#*#*
WLAN test(Use “Menu” button to start various tests) – *#*#232339#*#* OR *#*#526#*#* OR *#*#528#*#*
Shows WiFi MAC Address – *#*#232338#*#*
GPS test – *#*#1472365#*#*
Another GPS test – *#*#1575#*#*
Bluetooth test – *#*#232331#*#*
Shows Bluetooth device address – *#*#232337#*#
*#*#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.
*#*#7594#*#*
This one is my favorite one. This code can be used to change the “End Call / Power” button action inyour phone. Be 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.
*#*#34971539#*#*
This code is used to get information about phone camera. It shows following 4 menus:
Update camera firmware in image Update camera firmware in SD cardGet camera firmware versionGet firmware update count
*2767*3855#
This code is used for factory format. It’ll remove all files and settings including the intenal storage. It’ll also reinstall the phone firmware.
WARNING: Once you give this code, there is no way to cancel the operation unless you remove the battery from the phone. So think twice before giving this code.
