Why you can’t see the iPhone screen with polarized sunglasses?
First you need to know the structure of the LCD screen and how it works! As you can see from the picture above, each LCD screen contains backlight unit, rear polarizer (near to backlight unit), TFT array, liquid crystal, color filter and front polarizer (near to screen display). What related mostly to our problem here is the polarizers, which is used to filter the lights and allows the light of specific direction to pass and effectively eliminate the extra glare and it plays an important role in display image quality and performance. For the China made iPhone screens, most of the factories have used third party polarized films instead of OEM one because of the cost. According to our research, you may experience this problem in nearly half of all China made iPhone screens. As it's summer time, more and more customers would wear sunglasses while using the phone. We suggest you to test all your screens before installation.
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