https://news.post76.hk/2012/07/lg-%e9%9b%bb%e5%ad%90-optimus-lte2%e6%99%ba%e8%83%bd%e6%89%8b%e6%a9%9f%e5%85%a7%e7%bd%ae-2gb-%e5%85%a7%e5%ad%98/