Since smartphones dominated the mainstream market, mobile phones, serving as entertainment and information hubs during fragmented time, have required larger display areas, leading to increasingly larger screens. Simultaneously, traditional phones have a "forehead" for the earpiece and front-facing camera, and a "chin" for the home button, resulting in excessively large phone sizes and hindering improvements in screen-to-body ratio.
Later, Apple devised a solution: centralizing the components from the forehead and allowing the screen to extend upwards on both sides, resembling a "notch," hence the name "notch screen."
The "notch screen" fired the first shot in the war for screen-to-body ratio. Various Android phones subsequently imitated it, but quickly found it ugly and unappealing, leading to the emergence of designs with even higher screen-to-body ratios.
Waterdrop screen: The front-facing camera is avoided at the top of the screen, and the black background of the camera blends seamlessly with the top bezel, resembling a hanging water droplet, hence the name "waterdrop screen."
**Demonic Screen (or Waterdrop Screen):** Essentially a waterdrop notch screen, Huawei named it "Demonic Screen" because the area occupied by the camera resembles a full, round pearl, highlighting its premium feel.
**Punch-Hole Screen:** As seen in the previous designs, the way the front-facing camera is positioned determines the screen's shape. A punch-hole screen is created by cutting a hole in the screen and housing the camera.
**Waterfall Screen:** While notch, waterdrop, and punch-hole screens all rely on the top of the phone for the camera, they still leave bezels on the sides, making the design less impressive. To address this, curved edges were added, bending the screen downwards to eliminate the bezels from the front. This type of screen resembles a waterfall, hence the name "Waterfall Screen."
**Full-Screen Screen:** The front of the phone is a single, uninterrupted screen, without notches, waterdrops, or punch holes. The seemingly perfect full-screen design is achieved through a series of compromises: the front-facing camera is normally retracted inside the body and pops out slowly from the top when in use. This structure must be precise and durable, thus adding unnecessary complexity to achieve the perfect appearance. A true full-screen design can also be combined with a waterfall screen.