https://qooah.com/2012/01/12/huawei-mediapad-%e7%ac%ac%e4%b8%80%e5%ad%a3%e5%8d%87%e7%b4%9a-android-4-0%ef%bc%8c%e5%90%8c%e6%99%82%e6%96%b0%e5%a2%9e%e4%b8%89%e8%89%b2%e7%b3%bb/