https://qooah.com/2011/12/30/android-%e5%9c%a8%e7%be%8e%e5%9c%8b%e5%bf%ab%e8%a6%81%e5%a5%aa%e4%b8%8b%e4%b8%80%e5%8d%8a%e5%b8%82%e5%a0%b4%ef%bc%9bsamsung-%e7%b9%bc%e7%ba%8c%e7%a9%a9%e5%9d%90%e7%be%8e%e5%9c%8b%e7%ac%ac%e4%b8%80/