, you must enter specific numerical strings into the stock . These codes allow you to access hidden diagnostic menus, check hardware health, and view advanced software information that is not visible in standard settings. How to Use Secret Codes Open the Phone app on your Oppo A9 2020 Navigate to the dial pad . Type the desired code starting with * or # .
These codes work only if the device software hasn’t been heavily modified by carriers or updated to newer ColorOS versions that restrict them. how to use secret codes on oppo a9 2020 upd
simultaneously to enter the Recovery Menu for data wiping or system updates. Developer Options: Settings > About Phone , you must enter specific numerical strings into the stock
: Provides detailed battery statistics, network information, and usage history. Advanced & Utility Codes Type the desired code starting with * or #
: Displays the Specific Absorption Rate (radiation level) of your device. Service and Testing Codes
Watch this step-by-step guide to see these codes in action and learn how to navigate the hidden service menus safely: 02:06