I recently returned my iphone 7 plus to t-mobile for a hardware issue, and since it was under warranty I was sent a replacement phone. Today, I received my replacement phone and the screen did not feel like a normal iphone phone. It left fingerprints easily, and was not as smooth to the touch. I compared it with my son's iphone 6 plus and there is a noticeable different. I am beginning to suspect that my replacement phone has a replacement screen that is not an OEM Apple one. What can I do?