Yes, the protective glass is significantly smaller than the iPhone itself. It covers the side times just the active display area. But rounding the Iphone can probably nothing else. Aside from this limitation, the protective glass can easily be applied. Pre-clean well with the alcohol wipe and then wipe dry. I always prefer the protective film from only halfway, then positioning the protective glass exactly on the phone. The rest of the protective film can be removed afterwards. Since the protective glass all along the Iphone 'floats', dust particles can not "fall" on the iPhone screen. I can not say anything yet about durability, but so far it still looks like new (apart from the fingerprints times).