https://blog.wongcw.com/2018/09/27/ios-12-1-beta-1-%e5%b7%b2%e5%bc%80%e5%90%af-esim-%e5%8a%9f%e8%83%bd-%e4%bd%86%e8%bf%98%e9%9c%80%e7%ad%89%e8%bf%90%e8%90%a5%e5%95%86/
iOS 12.1 beta 1 已开启 eSIM 功能 但还需等运营商