How To Use Secret Codes On Oppo A9 2020 Upd [2021] Jun 2026

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.

: Accesses the engineering menu for advanced settings, often used to report bugs or check system logs. how to use secret codes on oppo a9 2020 upd

: Displays the specific absorption rate (radiation level) for your device. ⚠️ Important Safety Tips Secret codes are numeric strings entered into your

These codes allow you to check hardware health and system information: how to use secret codes on oppo a9 2020 upd