There is a thread that has a lot of discussion about UAPP and android. Maybe @prfallon69 or someone else can put up a pointer. Android’s handling of USB leaves something to be desired for quality audio. UAPP replaces how the Android system manages and limits the USB.
Dolby does something different. It can make a difference with either wired or wireless because most of what Dolby labs does is to process sound in one way or another. That is not always desirable for music. You can listen to the latest Dolby here:
When Dolby first came out, it was a system to reduce hiss noise on tapes, especially cassettes. It did this by making the recording volume louder in the frequency of tape hiss, then reducing the volume on playback. It worked pretty well. It was also used on master tapes. As we moved from tape to digital, they found other things to process. Now they are big into muli-track and working with spacial (placement in space, room acoustics) effects. That’s the Dolby ATMOS in the link above.
But Dolby is big for movies - not so much for music. It tries hard not to be a gimmick, and for its intended use is not.