There are lots of screen protection products out there for iphones. I just broke my screen today because I thought the Gorilla glass was strong, not. Does Apple recommend a type of screen protector for 5s and 6s phones? I like the tempered glass, but some say it is a gimmick.
I also don't want the phone in a sealed box as I can't enjoy the phone then.
Apple has no policy at all about screen protectors. Using one, or not, is entirely up to each individual owner.
I don't like any of them and don't use one and have not on my iphones. I do use a case, with my iphone 7 that is a Sena leather wallet case so there is a leather flap that folds over the screen when the phone is not in use. I just sold my 2 years old iPhone 6 which had been kept in a similar case and truly looked as good as it had the day I got it. The screens are no more fragile or prone to damage than any smart phone using a structural strengthened glass screen. But prudence would recommend a case of some kind if you are concerned about dropping as the best way to break any flat sheet of glass is to drop it on its edge or corners.
iphone screen protection recommendation
