A:AnswerI have the S9+ also and so far this screen protector has stayed perfect. How long? Time will tell but for now I'm satisfied
ZAGG - InvisibleShield Glass Curve Elite Screen Protector for Samsung Galaxy S9+ - Clear
A:AnswerYes it does. I also just bought the otter box defender for my S9+, wireless works fine. In fact best buy sells a combo kit with the otter box, screen protector and wireless charger.
A:AnswerThey stopped putting screens on their cases a few years back. That disappointed me. But on the plus side a curved screen might be more sensitive. Buy separate. Your phone will have great protection with the case. Get a nice screen protector. I believe tempered glass is pretty good. Hope this helped. Mike.
A:AnswerIt is a cutout in the hard center, it is a nub in the soft outer case that pushes against the buttons. When aligned correct, it should be easy to use