https://blog.wongcw.com/2018/12/05/galaxy-note-9%e9%96%8b%e6%94%beandroid-9-pie%e5%85%ac%e6%b8%ac%ef%bc%9a%e5%90%8d%e9%a1%8d%e6%9c%89%e9%99%90%e3%80%81%e7%84%a1%e9%8e%96%e7%89%88%e5%84%aa%e5%85%88/