https://qooah.com/2011/11/02/lg-%e5%be%9e%e6%96%b0%e6%be%84%e6%b8%85%e6%ad%a3%e7%82%ba%e6%97%97%e4%b8%8b%e9%ab%98%e9%9a%8e%e6%89%8b%e6%a9%9f%e6%ba%96%e5%82%99-android-4-0-%e9%9b%aa%e7%b3%95%e4%b8%89%e6%96%87%e6%b2%bb%e6%9b%b4/