Samsung SM-N950F/DS User Manual page 196

Apps and features
Starting Samsung DeX
1
Connect an HDMI adaptor to your smartphone.
2
Connect an HDMI cable to the HDMI adaptor and to a TV or monitor's HDMI port.
3
On your smartphone's screen, tap Continue → Start.
Without changing your smartphone's screen, the Samsung DeX screen will appear on the
connected TV or monitor.
HDMI adaptor (USB
Type-C to HDMI)
196
HDMI cable