https://qooah.com/2012/06/16/%e6%9c%80%e6%96%b0%e7%b5%b1%e8%a8%88%e6%8c%87-90-%e6%89%8b%e6%a9%9f%e6%94%b6%e7%9b%8a%e7%94%b1-samsung-%e5%8f%8a-apple-%e5%8c%85%e8%be%a6/