This code is used to get some really interesting information about your phone and battery. It shows following 4 menus on screen:
2. Factory data reset
This code is used for the factory data reset. It’ll remove following things:
All the Google account settings stored in your phone
System and application data and settings
Downloaded applications in your Internal SD!
It’ll NOT remove:
Current system software and bundled application
SD card files e.g. photos, music files, etc.
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
4. Phone Camera Update
This code can be used to get information about phone camera. It displays the follwing 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 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
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
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
This code can be used to enter into Service mode. You can run various tests and also change settings in the service mode.
8. WLAN, GPS and Bluetooth Test Codes:
*#*#232339#*#* OR *#*#526#*#* OR *#*#528#*#* – WLAN test