Parts of mesh Rendering White This is my first blender project. I am creating an ad for a phone. Everything looks OK in object view but when rendering in cycles there are white patches where it should be black. I thought the subdivided was causing it but  I removed the subdivide and I am having the same issue still. Here is a screenshot and the blender file. If anyone could help that would be great.
There is a white phone that is not visible in viewport but active for render.