I have had a GS1, GS3, GS5, GS6 and GS8. I have never used a screen protector or tried to protect my screen. I have never had scratch until my black GS8 - it is like delicate tissue paper!! It keeps scratching and I am trying to keep it safe. Seriously defective. What can you do???
My phone also has a micro scratch on the front and a couple on the back and I've had the phone for a little over a week. Black S8+ Unlocked from Bestbuy. I'm gonna try to buff it out with some compound then throw on a screen protector although I don't like the feel.
I recommend getting a Fitbag case from Amazon. They fit snuggly around the device and are lined with felt to ensure that they're no scratches. I love mine. The cases are made in Germany and are very good quality. Check them out. There are a variety of styles and colors.
fitBAG Jive Gray custom tailored sleeve for Samsung Galaxy S8+ / S8 Plus SM-G955F. Fine suit fabric pouch with integrated MicroFibre lining for display cleaning https://www.amazon.com/dp/B06XXQX5ZG/ref=cm_sw_r_cp_apa_wD-tAb1S6AWBR