Occlusion Culling in IOS Build?

I am building out an app for iPads (2 and higher) in Unity 4.5, and I’m coming across a memory problem with iPad 2 (which would be expected with it’s specs). However I came across the occlusion culling solution which I can clearly see that it is super effective just by comparing it within unity. Now when I build this project out to the iPad I don’t see no difference at all in the memory usage, leaving me to believe that the build is not supporting the occlusion culling.
When building out for IOS, is occlusion culling automatic or is Build Release hidden someplace other then in edit??
Because I’m not seeing whats shown in this video (2:40) Setting up Occlusion Culling for Unity iPhone - YouTube
and I searched through quite a few other sources and I have found no defining answer to this question.

I suppose, you are talking about the screen effect “SSAO Effect”.

I have tested this and it is not supported for mobiles. Unity is deactivating it automatically, when you build for mobile, because it’s pretty heavy. I think Unity gives a message, when the build is finished…