https://blog.wongcw.com/2020/03/19/oppo-a12%e6%96%b0%e6%a9%9f%e4%b8%8a%e5%b8%82%e5%9c%a8%e5%8d%b3%e5%b7%b2%e7%8d%b2imda%e8%aa%8d%e8%ad%89/