Totally agree with
@chillaxing. Most people testing this phone out in a store are going to use the stock LG music app. Granted, they may not know what to listen out for, but there are artifacts from this up-sampling. It's a bizarre oversight from LG.
I'd put the odds of LG ever fixing this at 0%. I've already sent three separate support requests to LG - each of which were supposed to have received a reply within 24 hours. They never responded to any of them. I then called tech support and spent close to two hours being pushed from one person to another. All of them were utterly clueless. They eventually promised me they'd cc me on a support email to the developers, which, of course, didn't happen. I've had similar experiences in the past with LG's tech support. They're pretty much worthless.
I guess it is what it is. The V30 is still a great piece of hardware - IMHO, the best phone available as of November 2017. But to reach its full potential, you'll want some third party apps on the V30 - of which Neutron looks like the clear leader so far. The only real issues with Neutron are the DSD playback via HO (which only works if you convert to 44 kHz PCM - but Dmitry is at least looking into this) and the coarse-grained volume control slider within the app itself, which isn't a deal-breaker for me. Between the stock LG music app for DSD, and Neutron for everything else (including all types of USB output), we're covered for all native sample-rate playback from local storage.
If Tidal can get their act together for streaming native 44 kHz tracks (and ideally, maybe, one-day, MQA too?!?), we'll be home and dry. If there are any other Tidal users out there, please bug them about this. My emails to them pretty much led to a dead-end, but maybe if enough people complain/ask politely...?