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Samsung DeX: Which Tablets Support Each Mode?

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Samsung DeX: Which Tablets Support Each Mode?

Samsung DeX lets you use a compatible tablet like a desktop computer by connecting it to a monitor or using it standalone. The key question is which tablets support which of the two main modes: DeX on an external display (via a cable or dock) and DeX on the tablet itself (the built-in desktop interface). As of 2024, all tablets that support DeX on an external display also support DeX on the tablet, but not all tablets that support DeX on the tablet support external display mode.

What Are the Two DeX Modes?

DeX comes in two distinct flavors, and confusion between them is common. The first is DeX on an external display, where the tablet connects to a monitor or TV through a USB-C to HDMI cable or a DeX Station/Pad. The tablet screen can act as a touchpad or second screen. The second is DeX on the tablet itself, which turns the tablet’s own screen into a desktop-like interface with resizable windows, a taskbar, and a start menu. This mode is available on high-end tablets running Android 10 or later, regardless of whether you plug in a monitor.

Tablets That Support Both DeX Modes

These tablets support DeX on the tablet and DeX on an external display:

  • Galaxy Tab S4 (2018) – first to get DeX on the tablet
  • Galaxy Tab S5e (2019)
  • Galaxy Tab S6 (2019)
  • Galaxy Tab S6 Lite (2020) – note: DeX on external display requires a USB-C to HDMI cable; it does not support the DeX Station/Pad due to different pins
  • Galaxy Tab S7, S7+ (2020)
  • Galaxy Tab S7 FE (2021)
  • Galaxy Tab S8, S8+, S8 Ultra (2022)
  • Galaxy Tab S9, S9+, S9 Ultra (2023)
  • Galaxy Tab S10+, S10 Ultra (2024)

All of these run Android 10 or later and have the DeX toggle in Quick Settings. For external display mode, you need a display that supports HDMI or DisplayPort over USB-C, and a cable that supports video output. The Tab S6 Lite is the exception: it uses a different USB-C implementation, so the official DeX Station won’t work, but a standard USB-C to HDMI cable does.

Tablets That Only Support DeX on the Tablet

Some tablets can run DeX on their own screen but cannot output to an external display. As of 2024, the only tablets in this category are the Galaxy Tab A series with S Pen (e.g., Tab A 8.4 (2020), Tab A7 Lite (2021) – though these are not officially listed by Samsung, community reports indicate DeX works on the tablet itself). The official Samsung list includes only the Tab S series and Tab A with S Pen models. However, the Tab A7 Lite does not support external display mode because its USB-C port lacks DisplayPort alternate mode. If you try to connect it to a monitor, nothing happens. For most users, this limitation is rarely a problem because DeX on the tablet is the primary way to use it.

How to Check If Your Tablet Supports DeX

If you are unsure about your specific model, there is a straightforward way to check:

  1. Open Settings.
  2. Tap Advanced Features.
  3. Look for DeX or Samsung DeX. If you see it, your tablet supports DeX on the tablet.
  4. To test external display support, connect a USB-C to HDMI cable to a monitor. If the monitor shows a desktop, you have external display mode. If nothing happens, your tablet likely lacks DisplayPort output.

Alternatively, check the box or the Samsung website for your model. The official spec sheet usually lists “Samsung DeX” as a feature, but it does not always distinguish between the two modes. The Settings method is the most reliable.

What About Older Tablets and the Tab A Series?

Older tablets like the Galaxy Tab S3 (2017) and Tab S2 (2016) do not support DeX at all. The Tab S3 was released before DeX was introduced, and Samsung never updated it. The Tab A series (non-S Pen) generally does not support DeX, even the newer ones like the Tab A8 (2021). Only the Tab A with S Pen models (e.g., Tab A 8.4 S Pen) have DeX, and that was a marketing decision to differentiate them. If you have a Tab A without S Pen, you cannot enable DeX through any official means.

Common Problems and Solutions

Users often encounter issues when trying to use DeX on an external display. The most common problem is that the monitor shows “No Signal.” This usually means the cable or adapter does not support video output. Make sure you use a USB-C to HDMI cable that explicitly supports “4K” or “video output,” not just charging. Another issue is that DeX on the tablet may not activate automatically; you need to swipe down from the top of the screen and tap the DeX icon in Quick Settings. If you do not see the icon, your tablet may not support DeX or you may be on an older Android version. Update to the latest firmware first.

How to Choose Between Modes

Use DeX on the tablet when you want a desktop-like experience without extra hardware. It is ideal for multitasking with multiple windows, using a mouse and keyboard via Bluetooth, and working on the go. Use DeX on an external display when you need a larger screen, such as for presentations, video editing, or connecting to a TV. Note that in external display mode, you can choose to mirror the tablet screen or use DeX; the DeX option is usually the default when you connect a monitor. If you plan to use DeX as a desktop replacement, the Tab S8 or newer with a keyboard cover is the best experience.

Frequently Asked Questions

Does the Galaxy Tab S6 Lite support DeX on an external monitor?

Yes, but only with a USB-C to HDMI cable. It does not work with the DeX Station or DeX Pad because those use a different connector that the Tab S6 Lite lacks. A standard USB-C to HDMI cable will work, but the tablet must support DisplayPort alternate mode, which it does.

Can I use DeX on the tablet without a monitor?

Yes, that is the whole point of DeX on the tablet. You can enable it from Quick Settings, and it turns your tablet screen into a desktop interface. You do not need any external hardware.

Why is DeX not available on my Galaxy Tab A?

Only the Tab A models with S Pen (like the Tab A 8.4 S Pen) have DeX. Regular Tab A models, such as the Tab A8, do not support DeX because Samsung did not include the feature in their firmware. There is no official way to add it.

Does DeX work on the Galaxy Tab S5e?

Yes, the Tab S5e supports both DeX on the tablet and DeX on an external display. It was one of the first mid-range tablets to get DeX, and it works well with a USB-C to HDMI adapter.

What is the difference between DeX and Samsung’s “Second Screen” feature?

DeX is a full desktop environment that runs on the tablet itself. “Second Screen” (available on Tab S7 and newer) lets you use the tablet as a wireless display for a Windows PC. They are separate features. DeX is for turning the tablet into a computer; Second Screen is for extending your PC’s display.

Can I use DeX on a tablet with Android 9?

No. DeX on the tablet requires Android 10 or later. If your tablet is stuck on Android 9, you cannot use DeX on the tablet, even if the hardware supports it. Check for software updates before assuming the tablet is incompatible.

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