I've had a case on my since day one and I also have a zagg screen protector. physically, its in tip top shape. Functionally, it works like the day I got it. I have had zero issues, and its been great phone.
Recently picked up space gray iPhone X and would like to know how it has been holding up for those who got it at launch day. Has the screen got burn-ins, have the buttons gone mushy? These are things I would really hate to happen.
Phenomenally, as I'd expect something from Apple to hold up. Buttons are as crisp as the day I unwrapped it. No screen burn in. I use my completely naked and not a single scratch on it. I've had it since release date. I've got a white one, the white back really hides any swirls and most likely scratches if I had any. Stainless surround also holds up nicely, I don't even see the typical swirling stainless gets.