It looks like it should be working then, but you will probably need USBAPP. Most of us here already have a USBAPP license already so we just assume everybody has it too.
I've got the V30, V50, and a Hidizs s9 pro plus and a Truthear Shio. I bought the V30 brand new in 2018, the V50 used in 20 both used as phones so the audio came for free (though was a primary consideration). I've just had to upgrade to a S23 Ultra hence the dongles. They are both very well reviewed and measured, but I do prefer the sound of the V50 and it has more headroom. However, just as a DAP, the Shio is all of £50 whereas a used V30 will cost more, let alone a V50.
You pose a curious question, and I imagine a few others may chime in with a response. Firstly, the "beauty", or secret, to the V series phones is their total execution of the music source - DAC'd & amp'd through the headphone jack. All you need is about any up-to-date phone platform to send digits to a nice DAC, like the xDuoo. I have V20, V30, V40 & V50 - dedicated to music, and my daily driver is my V20 because it sounds best. I stream Tidal & Qobuz. Can't tell you how long the old Android platform will continue working, and I can't relate to screen dimensions, as I find a cell phone "barely adequate" for anything video. I hope this will help.
Thank you for your reply
Not sure if this suggestion is what you're looking for, but I "banded" together my V30 & V40 to a really nice, thin, powerful ChiFi HP amp. The V20 has the biggest camera "bump" of the bunch, and it - like the others - also has a raised spot where the start button is located on the back (what were they ever thinking?), which ruled out the V20, since I had to access the back to turn on & off. I solved my "bump" issue on the V30 with a 2mm-thick piece of firm packing foam, but thick rubber bands (cut-up inner tube) or cardboard would also allow cutting out holes for the "bumps" to nest in, thereby leaving a flat mating surface. "Bumps" on back are very, very shallow on the V30.
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I'd certainly be receptive to something like the RU7, but I need a bunch more watts to maintain headroom & control for my fleet of 600Ω cans & HifiMen.I still use my V30 and V40 from time-to-time. Every time I return to them (especially the V30), I am always blown away with their performance - and considering I return to them from the stellar RU7, that's a huge compliment to the LGs.
Aux out to a Chi-fi HP Amp is something I do as well - especially for over the ear cans. That said triggering the high impedance mode out of the 3.5 is still a treat too
The good thing about the RU7 is that it has a Line Out function which means it can also act purely as a DAC when fed to an amp - sounds fantastic. This is the way your difficult to drive headphones can still access the RU7's fantastic sound quality. Perfect solution for your Chi-fi amp perhaps?
Have to confess I sidelined the ChiFi amp when I ran across a coupa threads on the HE6se, and ran it through direct spkr out from two amps I had lying around. I don't go mobile (listening chair in my bedroom), so I settled on an Emotiva integrated amp, for which I discovered my 600Ω'ers were also long awaiting. Only thing I give up is balanced signal, but the BasX A2m sounds so right I don't mind. Did I emphasize how watt-hungry the 6se & 600Ω cans are ? The 6se's really sing on my Yammy 180W amp, tho it's not a refined as the Emotiva.
