https://blog.wongcw.com/2020/01/13/%e4%b8%89%e6%98%9fgalaxy-s20%e7%b3%bb%e5%88%97%e7%9a%84%e5%9f%ba%e7%a4%8e%e5%9e%8b%e8%99%9f%e5%b0%87%e9%85%8d%e5%82%9912gb-lddr5-ram/