[mshroyer]

I use a screen protector to prevent wear to the oleophobic coating, which had noticeably degraded on my previous iPhone. I know you can also buy treatments to replace the coating on the screen itself, but I don't know how good they are, and the screen protector is easier to replace if eventually needed.

(I walk a good deal and also bike with the phone in my pocket, so it's possible my phone gets above average wear in this department.)