Apple's new iPhone 12 models are protected by a Ceramic Shield cover glass that has nano-ceramic crystals infused right into the glass to improve durability. According to Apple, Ceramic Shield offers four times better drop protection than the glass used for the iPhone 11 models.
YouTube channel MobileReviewsEh conducted some tests on the iPhone 12 using a force meter to compare its performance to the iPhone 11.
With a force meter that measures in newtons, the iPhone 11 was able to withstand 352 newtons of force, while the iPhone 12 was able to withstand 442 newtons of force. The Ceramic Shield of the iPhone 12 significantly outperformed the iPhone 11's cover glass.
In a separate scratch test, the iPhone 12 was able to withstand scratching from keys, coins, rocks, and a box cutter, receiving no scratches on the display.
With a Mohs hardness test, the 6 and 7 points were able to leave scratches on the iPhone 11, while the iPhone 12 stood up to the 6 point and saw some faint scratches with the 7 point. The 8 point left significant scratches on both. For reference, the 8 point is also able to scratch the sapphire lens of the iPhone.
The edges weren't particularly durable, and the back glass of the iPhone 12 appeared to scratch as easily as the back glass of the iPhone 11. From MobileReviewsEh:
This Ceramic Shield is definitely tougher on the iPhone 12s. Quite a bit, over 100 newtons. It took a lot of effort to break this screen. The remainder of the iPhone in terms of scratch protection is similar to the iPhone 11. Screen is a little more scratch resistant.
Now that iPhone 12 and 12 Pro models are out in the wild, we should be seeing additional drop and durability tests in the coming days that will give us a better idea of how the Ceramic Shield compares to the glass of earlier iPhones.
Keep in mind that these kinds of force tests and drop tests are not always going to see the same results, and can vary based on where a force meter is applied or the angle that an iPhone happens to fall at, so it's always best to use caution with with devices made of glass, Ceramic Shield or no Ceramic Shield.
