Titel says it, i’ve created a simple mesh with C4D (a Sphere), but when I put a Material on it, it only turns out like some grey and black areas on it. also the number of Polygons i pretymuch the same like the sphere in Unity but on the spere of unity i can put the material.
I also tryed to Export it to FBX, but nothing changed.
Little image (left one Unity Sphere, right upper one Polygon Object Sphere(C4D), right lower one Sphere Object(C4D))