Using secret codes on Oppo A9 2020 is a relatively straightforward process. Here's how to do it:
The menu is the core of hidden settings in ColorOS.
Shows your ColorOS version, Android version, kernel version, and other software parameters. how to use secret codes on oppo a9 2020 upd
In most cases, the code will activate immediately upon typing the final character. If not, press the Call button . Essential Secret Codes for OPPO A9 2020 (Updated)
: Shows the PCB (mainboard) serial number and hardware version. Using secret codes on Oppo A9 2020 is
*#3988691# — Used in conjunction with a specialized unlock code to unlock your device for different regions. 3. System and Settings
Many apps on the Play Store claim to unlock secret codes but often contain malware or display intrusive ads. Stick to trusted manual dialer entries. In most cases, the code will activate immediately
– Software Version: Provides comprehensive details about your phone’s software, including build time and operator version. 2. Network and Connectivity Settings
Explain in detail to test the cameras or display Give you steps to safely update your Oppo A9 2020
| Code | Function | |------|-----------| | *#06# | Show IMEI numbers (for device identification). | | *#888# | Show PCB / hardware version info (sometimes works on Oppo). | | *#1234# | Show software/firmware version. | | *#6776# | Full device information (model, build date, Android version). | | *#*#4636#*#* | Phone info, battery stats, usage statistics (Android standard). | | *#*#3646633#*#* | Engineer Mode (hardware testing for sensors, touch, display). | | *#*#6484#*#* | Hardware test (vibration, speaker, buttons, camera). | | *#*#232338#*#* | Show Wi-Fi MAC address. | | *#*#2664#*#* | Touch screen test. | | *#*#3264#*#* | RAM version info. | | *#*#225#*#* | Calendar & storage info (Google Calendar events). | | *#*#426#*#* | Google Play Services diagnostic (check GMS connection). |