Unless you own the product and know it has that problem I don’t know why you would invent it out of nowhere.

Can we also acknowledge that this is a general purpose smartphone and not an audiophile playback device? A ton of phones with headphone jacks had/have terrible DACs because they are general purpose devices designed to be good enough for the average person.

Someone who wants an audiophile playback device should buy an audiophile playback device.