https://blog.wongcw.com/2020/01/27/galaxy-m31%e9%80%9a%e9%81%8e%e8%97%8d%e7%89%99sig%e8%aa%8d%e8%ad%89%ef%bc%9aandroid-10%e7%b3%bb%e7%b5%b16gb%e5%85%a7%e5%ad%98/