Screen Protection Facts: Numbers Worth Knowing

Screen protection is full of numbers — hardness ratings, thickness specs, viewing angles. This page collects the ones that actually matter when you're deciding what to put on your phone.

9H — the pencil-hardness benchmark

Screen protector hardness is graded on the pencil scale, where "H" counts increase with hardness. 9H is the top of the scale used for glass coatings and is the accepted shorthand for "resists keys, coins and sand in your pocket". It is not the same scale as Mohs (mineral hardness) — comparing a 9H rating to "Mohs 9 sapphire" is a category error, though marketing sometimes makes it.

0.33 mm — the sweet spot thickness

Quality tempered protectors measure about a third of a millimeter — thin enough to be invisible to the touch and to case compatibility, thick enough to provide real impact absorption. Significantly thinner usually means less shock absorption; much thicker means edge-lifting and duller touch.

28° — the privacy angle

A 28° privacy filter keeps the screen readable inside a roughly ±28° cone from straight-on. Beyond that, the louvers inside the glass block the light path. In practice: you see everything, the person one seat over sees nothing.

30 days — the guarantee standard

A serious protection brand backs its product with a money-back window long enough for you to actually test it — drop tests excluded. Arctiqo's guarantee runs 30 days from delivery, no questions asked.

< 1 minute — the honest install time

With a tap-on alignment frame, a full install (clean, frame, peel, press) takes 40–60 seconds. Without one, "ten minutes" is optimistic and the result is luck. The frame is not a gadget; it's the difference between a spec and a promise.

All five numbers, one product: the Arctiqo™ 3-in-1 Screen Protector.