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Tests Indicate Standard Screen Protectors Undo iPhone 17’s Anti-Reflective Gains

Astropad’s measurements suggest the Ceramic Shield 2 coating functions only at a glass-to-air interface.

Overview

  • Controlled light-meter tests reported by Astropad show iPhone 17 reflectivity around 2.0% bare versus 3.8% on iPhone 16, but about 4.6% with a basic protector.
  • Astropad attributes the increase to adhesive covering the anti-reflective layer, which is tuned for direct air contact on the display surface.
  • Tech outlets including 9to5Mac, MacRumors, Forbes, Tom’s Guide and Phandroid have amplified the findings in reports this week.
  • Reported guidance for buyers: either use a protector with its own AR coating or skip a standard protector to preserve glare reduction.
  • Coverage notes Astropad sells an AR-coated film called Fresh Coat and that broad independent verification of the results remains limited; similar physics could affect other AR-treated phones.