I still don't get why the components have to be like this vs laid out more horizontally. I don't have a modern iphone in front of me to measure but the wrap aro

I still don't get why the components have to be like this vs laid out more horizontally. I don't have a modern iphone in front of me to measure but the wrap around "oval" they have for the camera looks pretty svelte. I'm not sure what would be in the macbook webcam package that wouldn't be in the iphone considering the macbook package doesn't even have faceid capabilities.