Nexus 4 top right corner and power button

Is it my device or are all 3 corners but the top right solid? When i tap it or knock on feels hollow, plasticky, tingy. I don't know how to describe it. I just want to make sure before i send in for a replacement. also the power button, it feels like the bottom portion isn't as sturdy as the rest. Anybody having the same problem or is it my device? Thanks.