Chosen Solution
I’ve got a small crack in the back glass of my Note 8. If I replace the back glass myself would it still be water resistant?
Well, it really depends on what you replace it with. If you get an OEM backplate with proper adhesive, you’re probably fine. If there’s a third party backplate and weak adhesive, you’ve probably lost your waterproofing (submersion) but you’re probably still fine for splashes.