Before there were commercials and whole branding exercises hailing the notch on the Apple iPhone there was a long row of iPhones Xs devices in the lobby of the Steve Jobs theater. The iPhone Xs was part of the second generation of notched iPhones so it was all kind of about the notch—but it was also about the fancy OLED display that showed off perfect blacks compared to the Xr’s traditional LED. Which is why Apple put a vibrant wallpaper with bright pops of color on the Xs and the…