Why cheap screen guards ruin your iPhone’s True Tone display

Your iPhone's True Tone feature dynamically adjusts display temperature based on ambient lighting. To do this, the front ambient sensors must receive clean, undistorted light.

Cheap screen protectors are made from low-grade materials that yellow quickly and block light spectra. This causes True Tone to render colors inaccurately.

Using a high-grade, true tone compatible screen guard ensures that the sensor cutouts are optically clear, preserving dynamic color accuracy.