known as MMI or USSD codes, are sequences of numbers and symbols that can be entered into the phone's dialer to access hidden menus, test device functionality, or change settings. These codes can be useful for troubleshooting, accessing device information, or customizing your phone's behavior.


Here's a breakdown of some common categories and examples:



1. General Information & Diagnostics:



*#*#4636#*#*: Displays phone information, usage statistics, Wi-Fi information, and battery information.


*#06#: Displays the IMEI (International Mobile Equipment Identity) number.


*#*#232338#*#*: Displays the Wi-Fi MAC address.


*#12580*369#: Displays software and hardware information.


*#*#2222#*#*: Displays FTA HW version.


*#*#1111#*#*: Displays FTA SW version.


*#*#3264#*#*: Displays RAM memory version.


*#*#34971539#*#*: Displays detailed camera information.

2. Testing and Troubleshooting:



*#*#0*#*#*: Opens the LCD display test.


*#*#0289#*#* or *#*#0673#*#*: Opens the audio test.


*#*#0842#*#*: Tests vibration and backlight.


*#*#0588#*#*: Tests the proximity sensor.


*#7353#: Opens the quick test menu (often used for Samsung devices).


*#*#232339#*#* or *#*#232338#*#*: Opens the Wi-Fi test.


*#*#1472365#*#*: Tests GPS.


##7764726: Hidden Service Menu (Motorola Droid).

3. Call and Network Settings:



*31#: Enables caller ID.


#31#: Disables caller ID.


*43#: Enables call waiting.


#43#: Disables call waiting.


*#67#: Displays call forwarding information.


*#21#: Shows call forwarding details.

4. Device Management:



*2767*3855#: Wipes your Android device (factory reset).


*#*#7780#*#*: Restores factory settings.


*#*#7594#*#*: Changes the behavior of the power button.

5. Other Useful Codes:



*#*#2663#*#*: Displays touchscreen version information.


*#*#2664#*#*: Touchscreen version and testing.


*#*#273282*255*663282*#*#*: Creates a device media backup.


*#*#8255#*#*: Starts GTalk monitoring.