Samsung updates DeX for the Note9, replacing the dedicated dock with a USB-C to HDMI adapter, as it aims to create a second screen experience
Devindra Hardawar / Engadget :
Context & Ripple Effects
When Samsung launched DeX alongside the Galaxy S8 in 2017, it was a hardware play: a dedicated dock that turned the phone into a desktop running a tweaked Android with multi-window support. The Note9 update marks the pivot point — the dock is gone, replaced by any USB-C to HDMI adapter, which reframes DeX from an accessory purchase into a software feature.
That shift set up what followed in the related coverage: by 2019 Samsung had extended DeX to run on Windows and macOS PCs, rolled it into the Note10's pitch, and pushed DeX for PC out to the Galaxy S10 via update. The adapter move is the moment DeX stopped being something you buy and became something your phone already does.
First-order effects
- Note9 owners get the desktop experience without buying Samsung's dedicated dock — a plain USB-C to HDMI adapter now delivers the second-screen mode, cutting the entry cost to near zero.
- The DeX dock itself is effectively orphaned as a product line, since the same feature ships through a generic cable.
Second-order effects
- Third-party accessory makers lose the premium-dock niche but gain volume at the cheap-adapter end, where differentiation shifts from hardware lock-in to cable quality and hubs.
- Rival phone makers' own desktop modes face pressure to match the lower barrier, since Samsung has demonstrated the feature can be delivered as a free software update rather than a boxed product.
Third-order effects
- The trajectory from dock to cable to PC app points toward smartphone desktop modes converging with traditional computing — the phone as the compute unit, with monitors and existing PCs as interchangeable displays.
- If the pattern holds, accessory revenue around flagship phones migrates from proprietary docks toward commodity cables and software subscriptions, weakening one of the classic ecosystem lock-in levers.
The trend: Smartphone desktop modes are shedding dedicated hardware and migrating onto screens people already own — first monitors via cheap adapters, then Windows and macOS PCs themselves.