1. Complete Information About Your Phone
*#*#4636#*#*
This code can be used to get some interesting information about your phone and battery. It shows the following 4 menus on the screen:
Phone information
Battery information (How to maximize or boost battery life in android phones)
Battery history
Usage statistics
2. Factory data reset
*#*#7780#*#*
This code can be used for a factory data reset. It’ll remove the following things:
Google account settings stored in your phone
System and application data and settings
Downloaded applications
It will NOT remove:
Current system software and bundled application
SD card files e.g. photos, music files, etc.
Note: Once you give this code, you will get a prompt screen asking you to click on the “Reset phone” button, giving you the chance to cancel your operation.
3. Format Android Phone
*2767*3855#
Think before you input this code. This code is used for factory formatting. It will remove all files and settings, including the internal memory storage. It will also reinstall the phone firmware.
Note: Once you give this code, there is no way to cancel the operation unless you remove the battery from the phone.
4. Phone Camera Update
*#*#34971539#*#*
This code is used to get information about phone camera. It shows following 4 menus:
Update camera firmware in image (Don’t try this option)
Update camera firmware in SD card
Get camera firmware version
Get firmware update count
WARNING: NEVER use the first option. Your phone camera will stop working and you will need to take your phone to a service center to reinstall camera firmware.
5. End Call/Power
*#*#7594#*#*
This one is my favorite. This code can be used to change the action of the “End Call/Power” button. Be default, if you hold the button down for a long time, it shows a screen asking you to select between silent mode, airplane mode, and power off.
Using this code, you can enable this button to power off without having to select an option, saving you some time.
6. File Copy for Creating Backup
*#*#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.
7. Service Mode
*#*#197328640#*#*
This code can be used to enter into service mode. In service mode, you can run various tests and change settings.
8. WLAN, GPS and Bluetooth Secret Hack Codes for Android:
*#*#232339#*#* OR *#*#526#*#* OR *#*#528#*#* – WLAN test (Use “Menu” button to start various tests)
*#*#232338#*#* – 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, Changelist 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 BackLight test)
*#*#2663#*#* – Touch screen version
*#*#2664#*#* – Touch screen test
*#*#0588#*#* – Proximity sensor test
*#*#3264#*#* – RAM version