*#*#4636#*#*
This can be used to get some interesting information about your phone and battery. It showsfollowing 4 menus on screen:
Phone information
Battery information
Battery history
Usage statistics
*#*#7780#*#*
This can be used for a factory data reset. It'll remove following things:
Google account settings stored in your phone
System and appliion data and settings
Downloaded appliions
......................
It'll NOT remove:
Current system software and bundled appliions
SD card files e.g. photos, music files, etc.
*2767*3855#
Think before you give this . This is used for factory format. It'll remove all files and settings including the internal memory storage. It'll also reinstall the phone firmware.
*#*#34971539#*#*
This is used to get information about phone camera. It shows following 4 menus:
Update camera firmware in (Don't try thisoption)
Update camera firmware in SD card
Get camera firmware version
Get firmware update count
*#*#7594#*#*
This one is my favorite one. This can be used to change the "End Call / Power" button action in your phone. Be default, if you long press the button, itshows a screen asking you to select any option from Silent mode, Airplane mode and Power off.
You can change this action using this . You can enable direct power off on this button so you don't need to waste your time in selecting the option.
*#*#273283*255*663282*#*#*
This opens a File copy screen where you can backup your media files e.g. s, Sound, and Voice memo
*#*#197328640#*#*
This can be used to enter into Service mode. You can run various tests and change settings in the service mode.
*#*#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
*#*#8255#*#*
This can be used to launch GTalk Service Monitor.
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
to launch various Factory Tests:
*#*#0283#*#* - Packet Loopback
*#*#0*#*#* - L 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
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