Tempered glass feels closest to the original screen, is very clear and spreads the force of an impact, but it is thicker and may crack on a hard hit, which is exactly its job. Hybrid or flexible glass is thinner and bends rather than shatters, so it suits screens with slightly curved edges, though it absorbs less impact. For everyday protection, tempered glass is the usual choice.

Work in a dust-free room, such as a bathroom after a hot shower. Clean the screen with the wipe in the box, lift any remaining dust with the sticker, then line up the glass using the camera and edges, or the alignment frame, before lowering it in one go. Small bubbles at the edges can usually be pushed out with a card; trapped dust needs lifting and cleaning.

A standard tempered glass protector works normally with active styluses and keeps palm rejection and pressure sensitivity, although the tip may feel a little more slippery on glass. Some people who draw a lot prefer matte films that add a paper-like friction. Whichever you choose, make sure it is made for your exact tablet so the touch layer responds evenly.