Hands-on with Samsung's Dex, a dock for Galaxy S8 that lets users work on a desktop display, running a tweaked version of Android 7.0 with multi-window support
Context & Ripple Effects
DeX is Samsung's answer to a bet Microsoft made first: its Display Dock turned a Windows 10 phone into a PC-like monitor setup back in 2015, and Samsung is now running the same play on Android, shipping a dedicated dock alongside the Galaxy S8 that drives a desktop display from a tweaked Android 7.0 build with multi-window support.
The launch matters because it commits Samsung to a category where the hardware keeps changing shape — within two years the company would drop the dock entirely for the Note9 in favor of a USB-C to HDMI adapter, and later extend DeX to Windows and macOS PCs.
First-order effects
- Galaxy S8 buyers get a second computing mode out of the box: plug into a monitor via the dock and the phone presents a multi-window desktop UI instead of mirroring the handset screen.
- Microsoft's Display Dock concept gains its first serious Android counterpart, putting the two phone-as-desktop approaches in direct comparison for buyers deciding between ecosystems.
Second-order effects
- Samsung's own hardware roadmap absorbs the lesson quickly — the dedicated dock is retired for the Note9 in favor of a plain USB-C to HDMI cable, cutting accessory cost and friction once the software proves sticky.
- DeX becomes a differentiator Samsung carries across product lines rather than a one-off accessory, showing up as a selling point on the Note10 generation and as an unfinished feature reviewers flag on the Tab S7 tablets.
Third-order effects
- If the pattern holds, flagship phones stop being companions to PCs and start substituting for them at the low end of productivity work — though the Tab S7 review's verdict that DeX 'still feels unfinished' three years in shows the software gap between a phone OS and a desktop OS is the binding constraint, not the hardware.
- The durable structure this points toward is a two-tier market: vendors like Samsung keep investing in convergence features because they differentiate premium hardware, while actual displacement of desktops stays limited until app ecosystems fully adapt to windowed, keyboard-driven use.
The trend: Smartphone makers are steadily converting flagship phones into desktop-class computing surfaces, with Samsung iterating DeX from dock to cable to cross-PC mode faster than the underlying Android software matures.