https://blog.wongcw.com/2021/11/05/%e8%98%8b%e6%9e%9cipad-mini-6%e5%9c%8b%e8%a1%8c5g%e7%89%88%e5%85%a5%e7%b6%b2-%e5%94%ae%e5%83%b94999%e5%85%83%e8%b5%b7/