This sticker signifies that the case is dual-compatible and designed to fit both the standard iPhone 13 and the standard iPhone 14. Because both phone models share the exact same height (146.7 mm) and width (71.5 mm), they can often share a flexible or slightly oversized case. However, keep in mind that the iPhone 14 is about 0.15 mm thicker and has a marginally larger camera module, so the fit may be tightly snug on a 14 or leave a small gap around the camera lenses on a 13