splash Masque Clear Screen Protector for iPhone 4 4G  4S AT&T and Verizon (3-Pack + 2 Bonus Back Films)
While this is not the easiest to align with the iPhone precisely, the quality of the film is very high. It pretty much preserves the crisp display and it is easy to slide your fingers over it. Really durable and can really protect the screen against scratches. Almost impossible to tell there is a protector on the iPhone - definitely recommended!    Try to prevent dust from getting underneath the film when installing! Using a little water (emphasis: little!) can really help getting rid of the bubbles when in