https://blog.wongcw.com/2018/12/07/%e8%98%8b%e6%9e%9c%e5%90%91ios%e7%94%a8%e6%88%b6%e5%bd%88%e5%bb%a3%e5%91%8a%e6%b6%88%e6%81%af%e4%bf%83%e9%8a%b7iphone-xs-xr/