https://blog.wongcw.com/2020/01/05/%e8%b0%b7%e6%ad%8cpixel-a-xl%e7%89%88%e6%96%b7%e6%9b%b4%ef%bc%9apixel-4a-xl%e4%b8%8d%e6%9c%83%e6%9c%89%e4%ba%86/