When Apple unveiled the iPhone X for the first time, the design was received with some controversy. Although everyone appreciated the device's edgeless display, it was difficult for many people to hide in the unfavorable notch. Sure, there was no way for Apple to put the video and Face ID components of the device under the display, but many wondered why Apple did not want to hide the notch just by flipping the flaps on the left and right of the image sensor made. Instead, Apple has given the developers and users everything to embrace the score.
A week or two after its release, it became overwhelmingly clear that the uproar over the iPhone X notch was overkill. For the vast majority of users, the score, though initially annoying, quickly took a back seat and became a non-factor. It was not long before we saw a handful of Android phone manufacturers begin to copy the iPhone X design to the very hilt itself. At this point, just a few weeks ago, a photo with 20 Android phones with iPhone X-style notch designs began to make the rounds. Interestingly enough, not all notch designs are the same and some of the android imitators we've seen so far have shown terrible-looking implementations. As it turns out, there's more to the iPhone X notch design than meets the eye. As I just touched this point, I recently came across an old media article by Brad Ellis explaining why the notch on the iPhone X looks much more aesthetic than many competing designs.
As Ellis notes, there are a variety of ways to implement a notch design, some significantly better than others. Conversely, the direction that Apple has taken with the iPhone X seems to work for reasons Ellis explains in detail.
This is where the nerd part comes into play, iPhone X rounded screen corners do not use the classic rounding method, which feeds a straight line and then a single quadrant arc of a circle. Instead, the math is a bit more complicated. Usually called a squircle, the slope starts earlier but is gentler.
Now let's talk about the notch itself. The left and right sides have two rounded corners. Because of the decrease in the curve, one turn is not completed until the next one starts ̵1; they blend seamlessly together. Therefore, no tangent on this edge actually hits a perfect vertical.
If you've wondered why the iPhone X just looks smoother than a host of Android imitators, you should definitely check it out from Ellis' entire piece – which contains a number of illustrative examples – over here ,