The OPPO A57 can be a powerful diagnostic tool when using secret codes, but :
October 2023 (Updated for relevance) Device: OPPO A57 (CPH1701 / 2016 model & CPH2387 / 2022 model) Operating System: ColorOS (based on Android 6.0 to Android 12) -Como utilizar codigos secretos en OPPO A57
These codes launch diagnostic tools to test screen, sensors, cameras, etc. The OPPO A57 can be a powerful diagnostic
This model (CPH2387) uses a Snapdragon 680. MTK codes will NOT work. Instead use: -Como utilizar codigos secretos en OPPO A57