iPhone Duo’s Folding Display Is Not Under Ceramic Shield: Apple’s Polymer Cover and the 40 Percent Stiffness Claim

The iPhone Duo’s 7.6-inch folding display is the one screen on the phone that Apple does not put under Ceramic Shield. Apple’s press release describes a custom polymer with 40 percent higher stiffness than the industry standard, laid over high-strength glass layers and finished with a scratch-resistant coating, while the 5.4-inch outer display...