With the launch of the Galaxy Note9 this year, Samsung brought a new version of its DeX feature, which didn't need a dock to enable the full desktop DeX experience - a USB-C to HDMI cable would do just fine. And according to the leaked Samsung Experience 10 beta software based on 9.0 Android, the Galaxy S9 will get the feature as well.
There's a catch though - if you choose not to use the DeX dock, you will be allowed to open only 5 windows instead of 20 and you will lose all the additional connectivity options the dock provides. In any case, since the Galaxy S9 , the regular Galaxy S9 share the same chipset, Samsung will probably deliver the feature to the smaller member of the duo as well.
