https://qooah.com/2012/04/09/optimus-2x-%e4%b8%a6%e4%b8%8d%e9%85%8d%e5%82%99%e6%b0%99%e6%b0%a3%e9%96%83%e5%85%89%e7%87%88-lg-%e5%90%91%e6%b6%88%e8%b2%bb%e8%80%85%e9%81%93%e6%ad%89/