https://blog.wongcw.com/2020/03/03/32gb%e5%94%ae99%e5%85%835g%e8%b6%85%e7%b4%9asim%e5%8d%a1%e7%99%bb%e9%99%b8%e5%b1%b1%e8%a5%bf%e6%9c%94%e5%b7%9e/