Types and effects: 1. High Definition: High Definition is transparent and does not affect the light transmission of the screen, making the screen clearer. 2. Frosted: Only the frosted effect can effectively prevent fingerprint residue (except for glue and large amounts of oil stains). 3. Privacy: Effectively prevent people on both sides from peeping at a certain distance. Protect privacy and security. 4. Frosted anti-blue light: It has a frosted effect to effectively prevent fingerprint residue; it also has an anti-blue light effect to protect the eyes and face from blue light radiation. 5. Anti-blue light: Anti-blue light effect, protect eyes and face from blue light radiation. Specification: Scrub type, privacy type mobile phone film, if you don't open the hole, your mobile phone lens can't be used at all. Sellers don't make useless designs.