I have the same problem, using 4.17.2 (Same as 4.15 and 4.16) the game crashes after the splash screen.
It is suposed to work, I’ve been digging and there is a lot of people complaining about this. I did a debug build (The debug build works) and resigned It with Appstore mobile provisions but when I upload the app It says that the executable size is over 60 mb.
The shipping build directly crashes after the splash screen.
So now I have an ipa that cannot be submitted and another ipa with an executable size lower than 60 mb that doesn’t works.
My client is completely desperate, I have been trying to make this works during weeks (Weekends included), you at epic should at least advice in the documentation that the googlevr support on iOS is tricky or beta or experimental or simply doesn’t works, so the people can reconsiderate about using unreal for mobile vr development.
Please if someone managed to make this work please share the magic steps you followed to make it work.