iPhone 4 4s screen protector, CrypTech Premium 9H Tempered Glass Screen Protector for iPhone 4s, iPhone 4, Tempered Glass Anti-scratch for Apple iPhone 4, iPhone 4s (Hardness: 9H),0.33mm,2.5D Rounded Edges Extremely high hardness: resists scratches up to 9H (harder than a knife) Rounded edge designed to provide the smooth and naked iPhone screen experience as well as improved chip-resistance. Oleo phobic coating prevents excessive fingerprinting and oil stains, and makes the film easy to clean. Silicone bubble-free adhesive adheres to the phone's screen without any gaps or bubbles, leaving the touch sensitivity unaffected. Built-in anti-shatter film to protect you and your phone - if it does break, the tempered glass breaks into small pieces that stick together, making it safer for users.