https://qooah.com/2012/03/01/%e9%a6%96%e5%8f%b0-android-%e6%8a%95%e5%bd%b1%e6%89%8b%e6%a9%9f-galaxy-beam-%e7%a2%ba%e5%af%a6%e5%b0%87%e5%9c%a8%e4%b8%83%e6%9c%88%e4%b8%8a%e5%b8%82/