cell phone screen protectors scratch proof

They are made from tempered glass and are specified with a 9H hardness rating.

They are very thin — listed at about 0.30 mm (shown as 0.3 millimeter / 0.30 mm in the details).

They advertise scratch resistance and protection against impacts, dents, dirt, dust, and shattering, reinforced by a 9H hardness rating.

They use 2.5D curve technology for full screen coverage and include a thin border designed to integrate with the phone's edges.

Yes — they include anti-fingerprint properties and an oleophobic (anti-smudge) coating that helps liquids bead up for easier cleaning.

They include an alignment frame plus an anti-static self-adhesive layer to simplify installation and reduce bubbles.

Yes — some options include anti-spy privacy film that reduces side viewing angles (listed at about 120 degrees) and provides two-way privacy in portrait mode.

Most listings show a package quantity of three protectors, with packaging details listing "3 x" protectors in the box.