https://qooah.com/2012/10/23/%e6%9c%89-63-android-%e7%94%a8%e5%ae%b6%e5%b0%8d%e8%b3%bc%e8%b2%b7-iphone-%e4%b8%8d%e6%84%9f%e5%88%b0%e8%88%88%e8%b6%a3/