How to Use Android MMI and USSD Codes

Open the Phone app on your Android device and bring up the dial pad to use MMI codes. As if you were placing a call, enter the code and press the Call button. Typically, MMI codes begin with an asterisk (*). Certain codes might not function on every device.

Use these codes to perform advanced diagnostics.

Some codes may not be accessible for all devices:

Dial/SMS	Code	Description
Dial	*#9090#	Display the diagnostic configuration.
Dial	*#9900#	Access the System Dump mode.
Dial	*#745#	Display the RIL DUMP menu.
Dial	*#746#	Mode for debugging and dump
Dial	*#872564#	Display the USB Logging Settings
Dial	##778	Display the EPST menu
Dial	*#*#1111#*#* or *#*#2222#*#*	Display the FTA software version.
Dial	*#3214789#	Display the GFC mode status.
Dial	*#03#	Display the NAND Flash serial number.
Dial	*#*#7594#*#*	Power off your smartphone.
Dial	*#*#273282*255*663282*#*#*	Create a backup of your device.
Dial	*#*#7780#*#*	Factory Reset the device
Dial	*2767*3855#	Wipe your smartphone and install the firmware again.