https://blog.wongcw.com/2018/10/21/%e8%b0%b7%e6%ad%8cpixel-3-3-xl%e5%85%a8%e7%b3%bb4gb%e5%86%85%e5%ad%98%e9%81%ad%e7%94%a8%e6%88%b7%e5%90%90%e6%a7%bd%ef%bc%9a%e5%90%8e%e5%8f%b0%e6%9c%80%e5%a4%9a%e6%8c%823%e4%b8%aa%e7%a8%8b%e5%ba%8f/