Anyone else notice how easily the Apple logo on (the back of) the iPhone 6 tends to smudge and smear when you touch it with your thumb/finger? Is this normal? Any slight brush or light rub causes the material to pick up fingerprints like the plague. Have been a bit annoyed by it ever since I took my 6s+ out of its box, and now that my 1-year warranty is almost up (counting down the days), I'm starting to wonder whether this texture/characteristic of the logo/material (stainless steel?) is exclusive to my device or a general side effect of said material. Would greatly appreciate any input any one else may have re their own experiences.