Customizing sound enhances entertainment sound quality on your phone.
Customize sound effects and audio quality on OPPO F3 Lite (A57) as follows:
Step 1: Go to 'Settings' and select 'Sound and vibration'.

Select 'Sound and vibration'.
Step 2: Choose 'Dynamic Sound Technology'.

Choose 'Dynamic Sound Technology'.
Step 3: Turn on 'Real HD Sound'. Note: Only supported when using headphones.

Turn on 'Real HD Sound'.
Step 4: Choose music modes such as jazz, rock and roll...

Choose music modes such as jazz, rock and roll...
Through these adjustment steps, you can customize the sound to suit your preferences. Wishing you success.
