https://qooah.com/2011/12/11/apple-%e5%8f%88%e5%86%8d%e8%80%8d%e9%ab%92%e6%8b%9b-%e9%80%9a%e9%81%8e-digitude-%e8%b5%b7%e8%a8%b4-htc-%e5%8f%8a-samsung/