https://blog.wongcw.com/2019/03/11/%e5%9b%a0google%e9%97%9c%e9%96%89android-beta%e5%ae%98%e6%96%b9%e7%a4%be%e5%8d%80%e5%ae%a3%e5%b8%83%e8%bd%89%e7%a7%bb%e5%88%b0reddit/