The term refers to the specific dimensions, measured in pixels, that dictate the display area of Apple’s mobile operating system devices. These values determine the visual fidelity and the amount of content that can be displayed on the screen at any given time. For example, an iPhone 14 Pro possesses a different pixel count than an older iPhone SE, resulting in varied visual characteristics.
Understanding these specifications is paramount for developers creating applications for the Apple ecosystem. Correctly implementing designs that adapt to varying pixel densities and screen sizes ensures a consistent and optimal user experience across the diverse range of devices. This impacts everything from image clarity and text legibility to the overall layout and usability of an app. The evolution of these display capabilities mirrors the advancements in mobile technology, with newer models offering increased sharpness and color accuracy.