Displays detailed network and battery statistics, usage history, and Wi-Fi information.
, you must enter specific numerical strings into the stock . These codes allow you to access hidden diagnostic menus, check hardware health, and view advanced software information that is not visible in standard settings. How to Use Secret Codes Open the Phone app on your Oppo A9 2020 Navigate to the dial pad . Type the desired code starting with * or # .
These codes allow you to check hardware, software, and diagnostic information directly: how to use secret codes on oppo a9 2020 upd
Type the specific code sequence exactly as listed (usually starting with *# and ending with # ).
Displays PCB (mainboard) serial number and hardware revision. How to Use Secret Codes Open the Phone
While many codes provide static information, the true power of these "secret" menus lies in the diagnostic and engineering modes. These aren't just for show; they are powerful, real-world tools.
the native Phone/Dialer application on your home screen. Input the sequence *#899# using the keypad. Displays PCB (mainboard) serial number and hardware revision
: The high capacity allows for over 11 hours of continuous HD video playback .
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: Displays the Specific Absorption Rate (SAR) to check the radiofrequency energy level emitted by the device.
For routine maintenance, use the app rather than hidden codes, as it is safer. Use the secret codes primarily for troubleshooting suspected hardware issues.