https://blog.wongcw.com/2018/12/11/%e6%86%91%e5%95%a5%e8%b3%a3329%e5%85%83iphone-xr%e5%ae%98%e6%96%b9%e6%b8%85%e6%b0%b4%e4%bf%9d%e8%ad%b7%e5%a5%97%e9%96%8b%e7%ae%b1%e4%b8%8a%e6%89%8b/