No.. As per Samsung "The Samsung DeX service is currently available on the Galaxy S8, Galaxy S8+, Galaxy S8 Active, Galaxy Note8, Galaxy S9, Galaxy S9+, Galaxy Note9, Galaxy S10, Galaxy S10 5G, Galaxy S10+, Galaxy S10e, Galaxy Tab S4, Galaxy Tab S5e, Galaxy Note10, Galaxy Note10+, Galaxy Note10 5G, Galaxy Note10+ 5G, and Galaxy Tab S6."
Please find below link: https://help.content.samsung.com/csweb/faq/searchFaq.do
I had the exact same problem with my S10. On my PC (Windows 7) I brought up device manager and Uninstalled the Samsung Mobile USB Modem driver under Modems. I did this with the phone still connected. The driver reinstalled itself immediately and the Dex app started working.