https://qooah.com/2013/11/29/%e4%b8%8d%e7%94%a8%e7%ad%89-android-4-3-lg-g2-%e6%98%8e%e5%b9%b4%e7%9b%b4%e6%8e%a5%e5%8d%87-android-4-4/