How to get front-facing camera on ios

I want to use unreal engine 4 to get the right of the front-facing camera on IOS device ,I search for the way ,but still don’t know how to do that.

i am looking for it too,do you found the way now?

Start AR Session should work. Requires a few other things but basically AR without any extras. What do you want to do with the data? I would start here Augmented Reality Overview | Unreal Engine Documentation. On the session config, pick face for your session type.