How To Use Secret Codes On Oppo A9 2020 Upd

, simply open your app and type the code exactly as shown below. Most of these codes will execute automatically as soon as you type the final character (usually a # or * ), so you typically do not need to press the call button. Common OPPO A9 2020 Secret Codes

*#6776# Shows the Build Time , kernel version, and ColorOS detailed version. Useful to verify if an update was successful.

This is the most comprehensive tool for testing hardware. You can perform manual tests on the touchscreen, camera, sensors (like the gyroscope), and speakers. Software Details (

Opens a hidden diagnostic menu for manual hardware tests (screen, camera, sensors). Software Info

Once a code has been disabled by a system update, there is no way to re-enable it without rooting your device, which is not recommended due to security and warranty concerns. how to use secret codes on oppo a9 2020 upd

This opens the OPPO hardware test menu . You can use this page to test your phone parts. It lets you manually test the screen colors, the cameras, and the speakers to make sure they work. 3. Check Phone Software Information Code: *#6776#

: Opens the built-in After-Sales Space (or Manual Test menu) where you can run full hardware tests on the screen, cameras, vibration, and sensors.

Engineer Mode is the most valuable hidden menu on any Oppo phone. It contains comprehensive hardware tests and diagnostics used by professionals to check components before and after repairs. It runs from a hidden app ( com.oppo.engineermode ) that ships on every Oppo device.

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 , simply open your app and type the

Go to Settings > About Phone, then tap “Build Number” seven times. This unlocks Developer Options, where you can enable USB debugging, monitor GPU usage, and change animation scales.

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Using secret codes is straightforward, just like making a phone call.

The OPPO A9 2020 is a powerful mid-range smartphone known for its massive battery, quad-camera setup, and smooth ColorOS interface. However, like most Android devices, it hides a treasure trove of diagnostic tools, test menus, and engineering screens behind a series of (also known as USSD codes or MMI codes). Useful to verify if an update was successful

Yes—when used for reading or testing . Avoid tapping "Write" or "Calibrate" in unknown menus.

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The Oppo A9 2020 is a feature-packed smartphone that offers a lot of value for its price. However, like many Android devices, it has some hidden features that can be accessed using secret codes. These codes, also known as dialer codes or engineering codes, allow you to access advanced settings, test hardware, and perform various diagnostic tasks. In this article, we'll show you how to use secret codes on Oppo A9 2020 and unlock its full potential.