I use Tidal for listening to music on my phone most of the time, whether wired or wireless. That, plus USB Audio Player Pro for wired listening, gives a pretty good sound quality over my DAC. At home and in my work office I have dedicated DACs and tube amps for driving my cans (Schitt Modi + Littleblack Mk.2 in my office, Schitt Mobius + Feliks Echo 2 at home).

I use the dedicated DAC on mobile for a few reasons:

1. My phone doesn't have a headphone jack and I have been dissapointed by most USBC-to-3.5mm dongles' build quality, so using a higher quality DAC gets around that.

2. I also generally prefer a balanced 4.4mm jack over an unbalanced 3.5mm, both for a more solid physical connection and to reduce crosstalk, and my DAC has both 3.5/4.4mm ports.

3. For wireless. I use IEMs that have a wired connection and the bluetooth adapters/replacement cables are pretty low quality in my experience (low battery capacity, poor sound quality, poor build quality, finnicky connectors, etc.) and a combo bluetooth/wired dac is avoids most of these issues. It also means I can keep the DAC and my phone in different places on my person (great for having my phone on a stand while biking and keeping the DAC in my pocket, or leaving my phone charging while I listen to music in my lab).