https://blog.wongcw.com/2021/01/22/2021%e5%b9%b4%e6%ac%begalaxy-tab-a-8-4%e5%b9%b3%e6%9d%bf%e9%ab%98%e6%b8%85%e6%b8%b2%e6%9f%93%e5%9c%96%e6%9b%9d%e5%85%89/