How To Use Secret Codes On Oppo A9 2020 Upd Direct
How to Use Secret Codes on Oppo A9 2020: A Step-by-Step Guide
The Oppo A9 2020 is a popular smartphone that offers a range of exciting features and functionalities. However, like many other Android devices, it also comes with a set of secret codes that can be used to access hidden menus, test hardware, and perform various troubleshooting tasks. In this essay, we will provide a detailed guide on how to use secret codes on Oppo A9 2020, updated for the latest software versions.
What are Secret Codes?
Secret codes, also known as dialer codes or engineering codes, are special sequences of numbers and symbols that can be entered into the phone's dialer to access hidden features and menus. These codes are usually not documented in the user manual or online resources, but they can be useful for advanced users, developers, and technicians.
Precautions
Before we dive into the list of secret codes, it's essential to note that some of these codes may require technical expertise and can potentially harm your device if not used correctly. Therefore, please exercise caution and use these codes at your own risk. Also, make sure to back up your data before experimenting with secret codes.
How to Enter Secret Codes on Oppo A9 2020
To enter secret codes on Oppo A9 2020, follow these steps:
List of Secret Codes for Oppo A9 2020
Here are some secret codes that you can try on your Oppo A9 2020:
Using Secret Codes to Troubleshoot Issues
Secret codes can be useful for troubleshooting common issues on your Oppo A9 2020. For example:
Using Secret Codes to Access Hidden Features
Some secret codes can unlock hidden features on your Oppo A9 2020. For example:
Conclusion
Secret codes can be a powerful tool for advanced users and technicians to troubleshoot issues, access hidden features, and perform various tests on their Oppo A9 2020. However, it's essential to use these codes with caution and at your own risk. By following the steps outlined in this essay, you can unlock the full potential of your Oppo A9 2020 and explore its hidden features.
To use secret codes on your OPPO A9 2020, open the Phone (Dialer) app and type the specific sequence of numbers and symbols. Most codes execute automatically once the final character (usually #) is entered, without needing to press the call button. Essential Secret Codes
IMEI Information (*#06#): Instantly displays your device's unique IMEI number, which is vital for tracking or reporting a lost phone.
Engineering/Diagnostic Mode (*#899# or *#800#): Opens a hidden menu to test hardware components like the screen, GPS, and Bluetooth.
Software Information (*#6776#): Provides detailed technical specs, including Android version, kernel version, and ColorOS build.
Hardware Revision (*#888#): Shows the PCB (mainboard) serial number and hardware version.
Maximum SAR Level (*#07#): Displays the Specific Absorption Rate (radiation level) of your device. Service and Testing Codes how to use secret codes on oppo a9 2020 upd
Calendar Info (*#*#225#*#*): Accesses a hidden page showing saved calendar events and related data.
FCM Diagnostics (*#*#426#*#*): View connection status and events related to Firebase Cloud Messaging.
GPS Test Mode (*#802#): Enters an automated TTFF (Time to First Fix) test for GPS.
Watch this step-by-step guide to see these codes in action and learn how to navigate the hidden service menus safely: 02:06
To use secret codes on your OPPO A9 2020 Go to product viewer dialog for this item.
, open the default Phone (Dialer) app and type the specific code exactly as shown; most menus will open automatically without needing to press the call button. Essential Secret Codes for OPPO A9 2020
These codes allow you to access hidden diagnostic menus and critical device information:
Engineer/Diagnostic Mode (*#899#): This is the most vital code for hardware troubleshooting. It opens a menu to test the touchscreen, display, audio, sensors, and camera.
Phone Information (*#*#4636#*#*): Displays detailed network and battery statistics, usage history, and Wi-Fi information.
Software Information (*#6776#): Shows your ColorOS version, Android version, kernel version, and other software parameters.
IMEI Number (*#06#): Instantly displays your device's unique identification numbers.
Hardware Revision (*#888#): Provides the PCB (mainboard) serial number and hardware version.
Feedback & Logs (*#800#): Opens a feedback menu where you can report issues like GPS lag or system bugs directly to OPPO. Quick Setup Guide Open Dialer: Access the Phone app on your home screen. Enter Code: Carefully type one of the codes above.
Automatic Launch: The hidden menu should appear immediately. If it doesn't, try pressing the Call button.
Caution: Be careful with "Factory Reset" codes like *#8778#, as they may instantly delete your data without a second warning. Activating Developer Options If you need deeper system tweaks beyond secret codes: Go to Settings > About Phone > Version.
Tap Build Number 7 times until you see "You are now a developer".
The new menu will appear under Settings > Additional Settings > Developer Options.
Code: *#*#3649546#*#*
Used to enable Full Throughput Analysis for network engineers. It shows signal strength (RSRP, RSRQ) and band info (LTE band 1,3,5, etc.). Useful in areas with poor reception.
On an updated Oppo A9 2020, only basic info and diagnostics codes work. The powerful engineering menus are locked. If you need hardware testing, use the hardware key combo (Power + Volume Down) at boot.
Proceed with caution, and never share your IMEI or other sensitive info displayed by these codes.
Code: *#*#1472365#*#*
Opens a standalone GPS test screen. You can see satellite count (GNSS), SNR ratios, and fix time. Great for checking if your navigation apps work correctly. How to Use Secret Codes on Oppo A9
If you want a particular hidden function (e.g., reset, view IMEI, test sensors), tell me which one and I’ll give the exact code and precautions.
Related search suggestions provided.
The OPPO A9 2020 Go to product viewer dialog for this item. remains a versatile device for many users, even after its permanent discontinuation. Understanding its hidden "secret codes" (also known as MMI or USSD codes) can help you troubleshoot hardware issues, check software versions, or perform diagnostic tests without needing external tools. How to Use Secret Codes on OPPO A9 2020
Using these codes is straightforward and does not require an internet connection. Open the Phone/Dialer app from your home screen.
Type the specific code exactly as written (e.g., *#06#) into the keypad.
In most cases, the menu or information will appear automatically after you type the last character. If nothing happens, press the Call button to execute the command. Essential Secret Codes List Below is a curated list of frequently used codes for the OPPO A9 2020
IMEI Number Check (*#06#): Displays your device’s unique international mobile equipment identity, essential for warranty claims or reporting a lost phone.
Hardware Version Check (*#888#): Use this to view the PCB (mainboard) serial number and hardware revision of your device.
Complete Software Information (*#6776#): Provides deep details including Android version, kernel version, ColorOS version, and build branch.
Engineering/Diagnostic Mode (*#899# or *#800#): Opens a technician-level menu for testing hardware components like the screen, cameras, vibration, and sensors.
Phone and Battery Information (*#*#4636#*#*): Accesses detailed usage statistics, battery status, and Wi-Fi configuration.
SAR Level Check (*#07#): Displays the Specific Absorption Rate (radiation level) for your specific model. Specific Hardware Diagnostic Codes
If you suspect a specific part of your phone is failing, you can trigger individual tests: Codes for OPPO A9 2020 - HardReset.info
How to Use Secret Codes on Oppo A9 2020: A Step-by-Step Guide
The Oppo A9 2020 is a powerful smartphone that offers a range of exciting features and functionalities. However, did you know that you can unlock even more features and access hidden settings using secret codes? In this article, we'll show you how to use secret codes on your Oppo A9 2020, updated for the latest software versions.
What are Secret Codes?
Secret codes, also known as dialer codes or engineering codes, are special codes that allow you to access hidden settings and features on your smartphone. These codes are usually entered into the dialer app, and they can provide you with valuable information about your device, as well as allow you to tweak advanced settings.
How to Use Secret Codes on Oppo A9 2020
To use secret codes on your Oppo A9 2020, follow these steps:
Popular Secret Codes for Oppo A9 2020
Here are some popular secret codes for Oppo A9 2020: List of Secret Codes for Oppo A9 2020
Example Use Cases
Here are some examples of how you can use these secret codes:
Important Notes
Conclusion
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!
To use secret codes on your OPPO A9 2020, 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
These codes allow you to check hardware health and system specifications:
*#899# — Full Diagnostic/AfterSales Menu: Opens the built-in hardware test menu to check the touch screen, sensors, GPS, and audio.
*#06# — IMEI Information: Displays your device’s unique IMEI number and barcodes.
*#6776# — Software Version: Shows detailed firmware info, including Android version, ColorOS version, and build time.
*#888# — Hardware Revision: View the PCB (mainboard) serial number and hardware version.
*#07# — Maximum SAR Level: Displays the specific absorption rate (radiation level) for your device. Advanced Testing & Feedback
*#800# — Feedback/Engineer Menu: Access the feedback menu to report issues like lag, GPS problems, or camera bugs directly to Oppo.
*#*#4636#*#* — Phone Info: Provides real-time data on battery health, usage statistics, and Wi-Fi signal strength.
*#*#426#*#* — FCM Diagnostics: View connection events and debug information for Google Play Services.
*#*#225#*#* — Calendar Events: Quickly view all events saved in your device's connected calendars. Security & Troubleshooting How to Use Secret Codes on OPPO Reno 13 Pro
Here’s a clear, helpful, and safe guide on how to use secret codes (also known as USSD codes or engineering codes) on the Oppo A9 2020, especially after a software update (ColorOS 11 or 12 based on Android 10/11).
These codes will delete data. Do not use these unless you intend to wipe your device.
A. Factory Data Reset
B. Hard Reset (Recovery Mode Alternative)