I am working on a smartphone render, on Blender 2.79 with Cycles, using mainly the new Principled shader. Everything is working perfectly, I am not new to 3D nor Blender, but there's a very specific surface that has proven difficult.
The back cover of the phone is made of some sort of glass (tempered glass) on top of a plastic surface (as I have come to guess, I might be wrong); and the mix gives a very particular kind of reflections.
I have managed to get close by combining Anisotropy and Clearcoat, but the result is still not satisfying. I'm even thinking about working without the Anisotropic reflections at all.
Here's a link to some pics of the real phone and some screens of what I have done so far.
I hope someone can help me with this.