https://qooah.com/2011/09/29/%e3%80%90%e9%ad%94%e9%ac%bc%e4%ba%a4%e6%98%93%e3%80%91m-%e5%8f%8a-samsung-%e9%81%94%e6%88%90-android-%e5%b0%88%e5%88%a9%e6%8e%88%e6%ac%8a%e5%8d%94%e8%ad%b0/