This safety glass of EasyAcc is definitely a sensible purchase. The Gorilla glass is approximately 0.3 mm thick and protects the screen from scratches and other damage. The glass is shatter-resistant, impact and scratch resistant. In order to raise the safety glass on the Xperia Z3, it is imperative to clean the screen first. Here you should never use an ordinary glass cleaner or similar means. In the pack there is a special display cleaning kit, which can be applied. Immediately after cleaning should be removed using the antistatic mat the remaining dust particles. Then you pull the protective film from the glass. The safety glass is glued now carefully at the display. DONE! The display is now perfectly protected. The acquisition is worthwhile in any case. The display is now effectively protected against scratches. This increases definitely the resale value.