https://qooah.com/2012/03/04/%e6%9c%89%e6%b6%88%e6%81%af%e6%8c%87-lg-%e5%b0%87%e5%9c%a8-2012-%e5%b9%b4%e5%85%a8%e9%9d%a2%e5%8d%87%e7%b4%9a%e8%87%b3-android-5-0/