Definitely eager to see 4K displays for an improved VR experience. I notice a slight improvement even between my S7 with its slightly higher pixel density over my S7 Edge. However, I'm not sure I will necessarily invest in a 4K phone just to do VR. I'd like to try demo units, though.
For my day to day utility, I find less eye strain using any iOS device I own. I don't know why. With my odd migraine issues I get the oddest results.
One day I was having nausea and seizure migraines so I said what the hell, can't get any worse, so I strapped on the Samsung VR goggles and toured some houses and reefs and flew over New York City in 3D and had a grand old time until my phone overheated. I felt great in VR and then my migraine and nausea came back when I came back to actual reality but not as bad. I have a neurologist. I give HER headaches trying to make sense of my brain. So go figure.
I find I prefer to reserve my two Galaxy phones for VR use. I'm back to using an iPhone for my "daily driver" especially for iMessage utility. My HTC 10 still has the best sound and phone connectivity so in a few days I'll be putting my secondary phone sim back into it so I can go back to using it to actually talk to people. Which isn't that often, lol.
I'm not saying my Galaxy phones are only good for VR. But VR is heating them up and taking a toll on battery lifespan, I'm sure. I can never predict which VR app will give me the dreaded shut down notice. So I'm reserving my free S7 Edge and relatively inexpensive S7 for the life killing VR use. Plus my other two phones aren't made for VR use and have only 1080p.
Given my experience with phones and VR, I think VR is super fun and I'm all in for it, but I think if I had only one phone to depend on, I would not do this to that one and only phone. And 2016 was a year to experiment. I do not intend to keep up four smart phones after this bunch does on me. In the future it's going to be two at most. Ideally I'd like to get back to one.
So at some point just before my Galaxy phones start to die, I'll also be looking into dedicated VR systems that don't need a whole room to set up in and that don't cost a fortune.
Because I'm just not sure if the future of VR is optimally entwined with smart phones. I don't know if the average consumer would be willing to fry their phones on a regular basis and therefore keep the manufacturers willing to invest in keeping their phones optimized for VR.
I never had any heating issues with VR on the S7 Edge, even after hours of playing time. Same with the Note 7.
But the S6 Edge would heat up too quickly on VR, to the point I had to put the AC on full blast just to get a good 30 minutes before display starts skipping and freezing.
I think mobile VR is the way to get consumers to get into dedicated VR, since dedicated VR is pretty expensive at the moment and you need a decent spec PC. Mobile VR is also the quickest way to get developers attention.