https://blog.wongcw.com/2020/10/27/%e6%91%a9%e6%a0%b9%e5%a4%a7%e9%80%9a%e7%a8%b1%e8%98%8b%e6%9e%9c%e4%b8%8d%e9%9c%80%e8%a6%81iphone-12%e5%b0%b1%e8%83%bd%e8%b6%85%e9%81%8e2019%e5%b9%b4q4%e7%87%9f%e6%94%b6/