You can choose to use the micro mscorlib, rather than mscorlib.
The downside is there’s a few libraries you can’t use ( Unity - Manual: Optimizing the size of the built iOS Player )
I built an iOS project with and without mscorlib.
As you can see, the difference is a couple MB only.
Further, when I archived the project to an IPA. Again the difference was about 1mb (perhaps reflecting the 2mb, compressed).
Does everyone agree that the final size saving when using micr mscorlib, is 1 or 2 mb?
That’s on the final IPA file. (It will be very similar in terms of the ultimate size in the App Store.)
Anyone have any detailed experience or knowledge with this? Cheers