Android devices, like old mobile phones, have numerous secret codes that can be entered through the keyboard of the phone application.
These codes, often referred to as "USSD" (Unstructured Supplementary Service Data) codes, provide access to hidden functions and menus that are not available through the standard user interface.
These codes are also used to know if a device is authentic or a counterfeit, for example by looking at the IMEI code you can check if it corresponds to the one in the box.
By looking at the information they provide about the hardware you can find out if the characteristics correspond to the data provided by the manufacturer, for example there are fake devices that have fake cameras on the back, only one rear camera is authentic and usually with fewer megapixels than the one mounted on the original device.
What are USSD Codes?
USSD codes are special commands that are entered into the phone app on an Android device. These codes, which typically begin and end with the * or # symbol, activate hidden features or provide important information about the device's status and settings.
What are they for?
Diagnosis and Information: Some codes provide detailed information about the device, such as firmware version, battery details, usage statistics, among others.
Hidden Settings: Allows you to access settings that are not available in the standard menus, such as hardware tests and network settings.
Troubleshooting: Make it easy to identify and solve device-specific problems.
Before you start:
Research before use: Some codes may alter important settings or reset the device.
Compatibility: Not all codes will work on all devices, there are codes that only work on certain brands so if one does not work, do not worry, it is not due to an error, it is simply not available on your device.
Risks: Avoid using codes from untrustworthy sources, as they may damage the device.
This is the list of some of the USSD codes commonly used on Android devices. Remember that the availability and functionality of these codes may vary depending on the manufacturer and model of the device.
*#06#: Shows the IMEI number of the device.
*#*#4636#*#*: Shows phone information, battery statistics, and data usage.
*#*#34971539#*#*: Detailed information about the camera.
*#*#273282*255*663282*#*#*: Back up all media data.
*#*#197328640#*#*: Activates test mode for services.
*#*#232339#*#* or *#*#526#*#*: Wireless connectivity test.
*#*#1472365#*#*: Perform a quick GPS test.
*#*#0283#*#*: Packet loop test.
*#*#0*#*#*: Perform an LCD screen test.
*#*#0289#*#*: Sound check.
*#*#2663#*#*: Displays the touch screen version.
*#*#232331#*#*: Bluetooth test.
*#*#7262626#*#*: Perform a field test.
*#*#232337#*#: Shows the Bluetooth address.
*#*#8255#*#*: Monitor the Google Talk service.
*#1234# Firmware version
Specific secret codes for Realme brand devices:
*#6776# Phone software information
*#888# Hardware Review
*#*#426#*#* FCM Diagnostics
*#*#225#*#* Calendar
*#07# Maximum SAR level
*#800# Feedback
