https://qooah.com/2011/12/25/%e5%9b%a0%e4%b8%8d%e8%b6%b3%e9%81%8b%e8%a1%8c-touchwiz-galaxy-s-tab-%e5%b0%87%e4%b8%8d%e8%83%bd%e5%8d%87%e7%b4%9a-android-4-0/