A:AnswerIt can be in water up to 6.6 feet in water and you can use volume buttons to take pics and vids because of touch response not working underwater
A:AnswerIt does have a screen that goes over your phone. I would imagine it would work fine with your glass screen protector on but I do not have one. My touch screen has worked perfectly with the screen it comes with.
A:AnswerI have dropped my iphone multiple times from 3-5 ft high without issue. The case does get damaged eventually, normally the rubber outside guard will scuff.