Recently bought a Tab S7 and created a dex setup for work. I connected my tab s 7 to an external monitor and i use a bluetooth key board and mouse to make my experince with dex better. I do have the keyboard cover for the Tab S7 which i use when i dont have it connected to my external monitor. I just plug and unplug, very mobile. The external monitor runs dex while i can use the Tabs7 to run other apps. So essential i have two screens. I have completly switched to dex as my main computing needs. No regerts .
