Amzer Privacy Screen Protector Shield for Blackberry Curve Compatible with BlackBerry Curve 8350i, BlackBerry 8300, BlackBerry 8310, BlackBerry 8320 & BlackBerry 8330 Maintain the privacy of your screen when you are in a crowded area, such as bus, train, airplane, etc. Privacy filter is manufactured to provide thick, durable, transparent surface without affecting the touch-screen features. LCD screen will be completely black when viewed from left or right at the 35 degree angle. Attaches smoothly with self-adhering surface; leaves no residue when removed