Will screen mirroring work if my Android device is in portrait mode?
如果我的 Android 设备处于纵向模式，屏幕镜像功能是否还能工作？
Yes. The TV will display a vertically oriented mirror of your screen. To fill your TV screen, turn your device to landscape mode.
是的，电视将显示您屏幕的垂直镜像。要填满电视屏幕，请将设备转为横屏模式。