Been using without any SC since replacement. Got some (not only one) hairline marks on front glass. However you really need to see them at certain angles with bright light.

Don't bother them much, but it feels a bit heartbreaking my note 7 is not in its perfect condition anymore.

Decided to buy official Samsung TPU SP but may not applying them yet. May be wait after one year after screen replacement then put SP.

Going to wait for better android phone. haishhh...