https://qooah.com/2011/11/29/android-%e5%9c%a8%e8%8b%b1%e5%9c%8b-10%e6%9c%88%e4%bb%bd%e9%8a%b7%e5%94%ae%e9%a1%8d%e8%a2%ab-iphone-%e5%8f%8d%e8%b6%85%e5%89%8d-2/