I downloaded the Soundcore app but can’t find the user interface to customize it. Where is it???
New User Needs Help
Ask the support, they will help you ist their job.
EQ customization or something else? EQ customization, I believe, is specific to certain audio devices and it has to be paired with the phone before configuring the EQ.
Try this and as stated once linked then you should be able to do what is needed depending on if the device has certain functions.