Note: The screen protector is intentionally cut smaller than the display because the edges are curved. Scratch-resistant, hard-coated surface with 3H pencil hardness. Test winner of c't magazine issue No. 3 (2012): Anti-reflective films in testing. Among many well-known manufacturers, the dipos anti-reflective film is the only one rated very good for reflection reduction. Intentionally smaller than the Xiaomi Redmi K30 Ultra back glass, as it is curved (see photos), it can be removed without residue at any time (without adhesive) and is bubble-free. Easy application - 100% bubble-free installation on a cleaned display! The special silicone adhesive layer displaces air during application and adheres smoothly to the display. No impairment of usability! The dipos screen protector offers a pleasant touch experience and is optimized for the Xiaomi Redmi K30 Ultra back.