机型	屏幕尺寸	启动图尺寸	英寸
XS Max	414 * 896	1242 * 2688	6.5
XS	375 * 812	1125 * 2436	5.8
XR	414 * 896	828 * 1792	6.1
X	375 * 812	1125 * 2436	5.8
8P/7P/6P/6SP	414 * 736	1242 * 2208	5.5
8/7/6/6s	375 * 667	750 * 1334	4.7
se/5s/5	320 * 568	640 * 1136	4

官方链接 https://developer.apple.com/design/human-interface-guidelines/ios/icons-and-images/launch-screen/