Privacy screen protector designed for optical clarity when viewing from the front, a person who is not in front of the screen can only see the dark side of the screen, protecting trade secrets and privacy. Features: Specially designed for Samsung Galaxy A23 4G screen protector. Touch sensitivity of the touch screen is not affected. Reduces bright blue light and thus prevents eye fatigue. With 9H tempered glass, it is the greatest protection against drops, scratches and impacts. High sensitivity provides a soft, comfortable touch feeling and increased pressure sensitivity. Thanks to the use of the advanced nano adsorption layer, the tempered glass screen protector can be automatically absorbed surface. Installation method: Step 1: Clean the screen with a damp paper towel and a clean cloth and remove the dust with a dust sticker. Step 2: Tear off the release film ①, place the tempered glass protective film parallel to the screen edge. Step 3: Press the center of the screen and apply naturally. Step 4: Press to stick with clean fingers or cards and remove excess air in between. Package contents: 1 x privacy glass. 1 x wet/dry wipes. 1 x sticker for dust removal. If the product you received is defective or if you have other suggestions. Please contact us via the Amazon messaging system. We will reply within 24 hours and do our best to find an optimal solution.