https://qooah.com/2012/10/05/%e5%82%b3%e8%81%9e-google-%e8%88%87-lg-%e5%b0%87%e6%96%bc%e4%b8%8b%e6%9c%88%e5%85%b1%e5%90%8c%e6%8e%a8%e5%87%ba-android-4-2/