https://qooah.com/2014/04/23/lg-g3-%e8%a6%8f%e6%a0%bc%e6%9c%89%e8%ae%8a-2gb-ram-1600-%e8%90%ac%e5%83%8f%e7%b4%a0%e4%b8%bb%e9%8f%a1%e9%a0%ad/