How To Use Secret Codes On Oppo A9 2020 Upd !!link!! May 2026
*#*#4636#*#* (Partial support) This standard Android code works partially. Tap "Battery information" for current charge level and power source. 6. Bluetooth & Wi-Fi MAC Address Code: *#*#232338#*#* Shows your Wi-Fi MAC address without going into Settings → About Phone.
*#*#232337#*#* Shows your Bluetooth device address. 7. Camera Module Test (Samsung/GK) Code: *#*#34971539#*#* Opens a camera firmware menu. You can verify your camera sensor type (e.g., Samsung GM1 or GW1 for main lens). Do not update firmware via this menu unless you have the correct file. 8. Factory Data Reset (Use with extreme caution) Code: *#8778# how to use secret codes on oppo a9 2020 upd
All codes verified on ColorOS 11 (Android 10/11) with security patches up to December 2025. If a future update disables any code, use the MTK Engineer Mode app as a backup. Bluetooth & Wi-Fi MAC Address Code: *#*#232338#*#* Shows
The universal IMEI code. This displays your device’s unique 15-digit IMEI numbers (two for dual SIM) and serial number. Copy this for carrier registration or warranty claims. and smooth ColorOS interface. However
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 secret codes (also known as USSD codes or MMI codes).
If you have searched for , you are likely looking for the latest, working codes to test your hardware, access advanced settings, or recover information. This updated guide for 2025-2026 provides a complete, step-by-step walkthrough. ⚠️ Warning: Secret codes give access to system-level tests. Do not change values in "Engineering Mode" or "Device Test" unless you know exactly what you are doing. Incorrect settings can affect your phone's performance. Part 1: What Are Secret Codes and Are They Safe? Secret codes are numeric strings entered into your phone’s dialer app. They trigger hidden activities within the firmware. For the OPPO A9 2020 (running ColorOS 6 to 11), most codes are used by service centers to diagnose issues.