https://qooah.com/2013/12/28/lg-%e8%a8%88%e5%8a%83%e5%9c%a8%e4%b8%8b%e4%b8%80%e4%bb%a3%e6%97%97%e8%89%a6%e7%b4%9a-android-%e6%99%ba%e8%83%bd%e6%89%8b%e6%a9%9f%e8%a8%ad%e6%9c%89%e6%8c%87%e7%b4%8b%e8%ad%98%e5%88%a5%e6%84%9f/