The Helmet Diamond Glass 4D is a protective screen cover designed specifically for the Samsung A01. It uses high-quality tempered glass with a 4D full-glue design, meaning the adhesive covers the entire surface to ensure a secure fit across the whole front screen. This ultra-thin layer provides a shield against scratches, shocks, and dust without distorting the image or reducing transparency. Because of its smooth finish and enhanced tactile response, you can navigate your phone with the same touch sensitivity as the original display.