seems like S8/+ has quite a few hardware issues, dont know its because of the unoptimized software between the OS and apps or memang hardware problem..

These are the prevalent issues so far (can be seen on reddit and xda of many users complaining about it):
1) S8/+ glass (front and back) very easy to pick up scratches compared to previous generations.
2) S8/+ fingerprint sensor also gets scratched easily (not glass)
3) S8/+ red-tint displays
4) S8/+ camera's OIS gets stuck quite often, have to shake the phone quite roughly in order to "unstuck" it.
5) S8/+ LED dying out of a sudden issue
6) S8/+ random sounds cuts from the speakers
7) S8/+ randomly rebooting.
8) S8/+ random vibrations after unlocking the phone via hard-pressing home button. (like it doesnt register immediately when you're pressing the home button to unlock, so the vibration comes later after u unlock the phone and touch anywhere on the screen)

then there's a plethora of software bugs between the OS and certain apps.
1) edge lighting not working with certain apps
2) facebook zooming in/out the wallpaper when exit the app
3) whatsapp LED notifications not working sometimes
4) whatsapp images received when open it, its zoomed a little.

anyone using FB app on S8 keep facing app crash recently?

I am having this issue since yesterday

at first, by clearing the appdata solved it, then not too long after, the issue repeat itself, and then I cleared the data, then after a while, it came again

better taken a picture in front of them to make it a proof before sending to repair?

when they receive the phone, they will mark down any scratches in the form and let you sign.
when u collect the phone, if found new scratches, then they need to take responsibly.
but if you collected the phone and sign the form already.
back home then only notice, you can suck thumb only ba.

Kind to share how u get at that unbelievable price?