Blackscreen on iOS but works in Unity Editor/ Game scene

Having issues where the scene works fine on Unity Editor, but shows a blackscreen on iOS.

wasted 2 days, trying to solve this. Found out that the problem was in ‘Quality’ settings. I have made some adjustments to my project quality settings as my 3D mesh was appearing ugly with lots of jagged edges…
and so long story short -
In Unity, Edit > Project Settings > Quality > you may choose “Simple”
“Anti-Aliasing”: 8x
but remove or disable shadows…no more black screen.