2020 Upd 2021: How To Use Secret Codes On Oppo A9

*#36446337# - Access advanced engineer mode (used by technicians).

Tap the screen repeatedly to cycle through solid red, green, blue, white, and black colors.

Displays information about stored calendar events. How to Use the "AfterSales" Testing Menu ( *#899# )

To use secret codes on your Oppo A9 2020, follow these steps: how to use secret codes on oppo a9 2020 upd

These codes are intended for advanced users and developers. Some codes can reset your device, delete data, or change critical system settings. Proceed at your own risk. It is highly recommended to back up your data before experimenting with unknown codes.

A powerful tool to log bugs related to GPS, lag, or network connectivity, allowing you to send detailed reports to Oppo.

, 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 # . *#36446337# - Access advanced engineer mode (used by

Using secret codes on your Oppo A9 2020 can unlock new features and provide you with valuable information about your device. However, be cautious when using these codes, and always use them at your own risk. With this guide, you're now ready to explore the world of secret codes on your Oppo A9 2020. Happy experimenting!

This code lets you see your phone mainboard serial number. It is helpful if a repair shop needs to replace parts on your device. 5. Check Maximum SAR Level (Radiation) Code: *#07#

Shows detailed software parameters including ColorOS version, kernel, and build time. Feedback Menu How to Use the "AfterSales" Testing Menu (

If you are trying to access a hidden menu to troubleshoot a broken phone, remember that the (accessed by holding Power + Volume Down while the phone is off) is the most reliable method for factory resets. 5. Important Security Warnings

To use secret codes on your , open the Phone (Dialer) app and type the code exactly as listed ; most codes will execute automatically without needing to press the call button. Essential Diagnostic & Information Codes