Secret Codes for Android Devices: Unlock Hidden Features

Ever wondered about the hidden potential of your Android device? Many “secret codes” begin with symbols like “#” and “*” and provide quick access to hidden settings or device information. In this article, we’ll explore these codes and explain how they can unlock various features on your Android phone.

What Are USSD and MMI Codes?

USSD Codes (Unstructured Supplementary Service Data) allow communication between your device and your mobile network for actions like checking your balance or data usage.

MMI Codes (Man-Machine Interface) give access to internal phone functions. These codes can display information like your IMEI number or open test menus for system checks.

General Secret Codes for Android

These codes are typically universal for most Android devices, but some may be restricted by your carrier.

Code	Function
*#06#	Display IMEI number
*#07#	Display SAR value
##4636##	Phone information menu
##232337##	Bluetooth address
##34971539##	Camera information (Select devices)
##2663##	Touchscreen version
##273282255663282*##	Backup media

Test Codes

Use these codes to run various hardware and sensor tests on your device.

Code	Function
##197328640##	Test mode
##232339##	Wi-Fi test
##0842##	Brightness and vibration test
##0588##	Proximity sensor test
##0589##	Light sensor test

Configuration Codes

These codes offer access to configuration and diagnostic settings.

Code	Function
*#9090#	Diagnostics settings
*#301279#	HSDPA/HSUPA settings
*#872564#	USB logging settings

Developer Codes

These are useful for developers who need to debug or test apps and system features.

Code	Function
*#9900#	System dump mode
##778 (+Green/call button)	EPST menu
*#746#	Debug dump mode

SIM and Call Management Codes

Manage your SIM and calls using these codes.

Code	Function
*04oldPINnewPINnewPIN#	Change PIN
*#21#	Display call forwarding status
*31#	Enable caller ID
#31#	Disable caller ID
*#43#	Enable call waiting
#43#	Disable call waiting

Manufacturer-Specific Codes

Samsung

Code	Function
#0#	Diagnostics menu
*#0228#	Battery status
*#1234#	Software version
*#2663#	Firmware details

Xiaomi

Code	Function
##64663##	Test menu

Realme

Code	Function
*#800#	Feedback menu
*#888#	Engineer mode – PCB number

OnePlus

Code	Function
*#66#	Encrypted IMEI
*#1234#	Software version

Asus

Code	Function
*#07#	Regulatory labels
.12345+= (Calculator)	Developer mode

Motorola

Code	Function
##2486##	Developer mode

Sony

Code	Function
##73788423##	Service menu

Nokia

Code	Function
##372733##	Service menu

HTC

Code	Function
##3424##	HTC test program
##786#	Phone reset menu (Caution!)

Caution Codes

Avoid these codes if you’re unfamiliar with them, as they can reset or wipe your device.

Code	Function
##7780##	Factory reset (data loss risk)
27673855#	Format device (data loss risk)

USSD Codes for US Providers

AT&T

Code	Function
*3282#	Data usage
*646#	Remaining minutes
*225#	Balance and billing info

Verizon

Code	Function
#3282	Data usage
#225	Balance info

T-Mobile

Code	Function
#225#	Account balance
#999#	Prepaid balance
#646#	Minutes used

These codes offer quick access to various settings and features, but use caution when experimenting. Let us know if you’ve discovered any other useful codes!