The absolute most vital environment accessible to you is the , prompted by dialing *#899# . This environment serves as a hardware defense screen, ensuring everything from the internal vibration motor to the quad-camera assembly operates correctly.
| Code | Function | Notes / What You'll See | | :--- | :--- | :--- | | | IMEI Number | Displays the unique 15-digit serial number for your phone, essential for network identification and warranty claims. | | *#6776# | Software Information | Shows in-depth software details, including your current Android version, kernel version, ColorOS version, and security patch date. | | *#1234# | Firmware Version | Displays the firmware build number and other related info. | | *#888# | PCB Number | Shows the serial number of your phone's mainboard (PCB), often used for service and repair. | | *#07# | SAR Level | Displays the Specific Absorption Rate value, indicating the amount of radio frequency energy absorbed by the body when using the phone. | | *#*#225#*#* | Calendar Events | Shows a list of festivities and events saved in your calendar. | how to use secret codes on oppo a9 2020 upd
Reveals full ColorOS build, Android patch tier, and baseband. *#800# The absolute most vital environment accessible to you
The process is identical to older Android phones: | | *#6776# | Software Information | Shows
These codes allow you to run tests on the physical components of your phone. They are invaluable for troubleshooting a problem (e.g., if your touchscreen is acting up or your GPS is inaccurate).
Frequent factory resets can degrade the internal storage over time and cause unnecessary wear on components.