Higher resolutions than the one iPhones have right now are... stupid. You use VR on your phone once a month if you're a hardcore VR fan, but you pay more and get worse battery life every day. A camping van is cool but it's stupid to buy it as your everyday car. Some companies just want to give all the features, Apple only wants to give perfectly working and useful ones (risking to look old).
If VR becomes mainstream (and I mean every phone buyer would use it every day), Apple will put serious VR support.
If VR becomes mainstream (and I mean every phone buyer would use it every day), Apple will put serious VR support.