https://qooah.com/2012/01/27/lg-optimus-%e5%be%8c%e7%b9%bc%e6%a9%9f-cx2-%e4%bb%a5-optimua-3d-max-%e4%b9%8b%e5%90%8d%e5%86%8d%e6%ac%a1%e7%8f%be%e8%ba%ab/