Tempered glass is curved at the sides, but not curved enough.

Pros: The alignment tool makes positioning the screen protector almost fool-proof, and I was able to position the protectors perfectly on the first try on both my my wife's phone and mine. Touchscreen sensitivity is not diminished by this screen protector. Cons: The curvature of the glass of this screen protector doesn't match the Galaxy S9. This results in gaps at the left and right sides of the screen, where it would be very easy for some foreign object to slip in an accidentally peel the screen protector off of the phone. This is mitigated by the cases I have installed on the sides and back of the phone, but without this case, I don't think this screen protector would be worth keeping. UPDATE: It's been about a month, and I'm reducing my rating to two stars. Because the protector's curve doesn't match the screen's, dust and dog hair are able to slide under it. Additionally, because the screen protector only adheres on the edges, and the sides don't make contact with the phone, when my wife tried to get the aforementioned dog hair out from between the screen and the protector, it popped off of the phone with almost no applied force. Bottom line: spend more and get a better product.

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