Hi guys...

I've also realised recently that my N9 screen had a scratch and that's after 1month+ of careful usage.
I have a N8 too and both phones have gone thru the same kind of environment as I carry both together.
They are either in my pocket or in my carrier.
Note that both had no screen protector and look at the scratch (see image) I have on the N9. N8's screen is still beautiful.

Really cannot understand why and how that scratch could have appeared on such hardened glass?

Under normal lighting...


Under flashlight...