It can not be universal, because the length is different, the size is different, the length of the phone case of Apple 13 and Apple 14 is different, the length of Apple 13 is only seven inches screen and the screen of Apple 14 is only 6.5 inches screen, so the Apple 14 is more compact and smaller
cannot
Apple 13 and 14 cases are not interoperable. The size and lens thickness of Apple's iPhone14 and iPhone13 are basically the same, but their cases are not universal.