https://blog.wongcw.com/2020/03/06/oppo-find-x2%e5%83%b9%e6%a0%bc%e5%85%ac%e4%bd%88%ef%bc%9a%e9%a0%82%e9%85%8d%e9%ab%98%e9%81%946999%e5%85%83/