Is there anything I should be aware of when using DeX mode with a Galaxy device? (Updated October 30, 2025)

Please see the following for notes on using DeX mode.

When screen sharing

If your monitor or computer screen is the same display as your device and does not switch to DeX mode, please check your settings.

1. Open Settings on your device.

2. Select Connections.

3. Select More connection settings.

4. Select HDMI Mode and make sure it is set to Samsung DeX.

1. Pull down notification bar.

2. Pull down a second time to fully expand it.

3. Tap Samsung DeX on the Quick Panel to make sure it is enabled.

When using DeX mode on a Samsung Galaxy series smartphone, the interface will change from smartphone to tablet mode.

Since the following settings will not be applied after connecting, please reconfigure them after switching to DeX mode.

・Palette Layout
・Command Bar Settings
・Selection Launcher Settings

Note: Even after disconnecting from DeX mode, please reconfigure these settings.

We have confirmed that when using DeX mode on Galaxy devices with One UI 8, the interface may be displayed as the smartphone version.

We will continue to investigate the cause of this issue.

We have confirmed that Show canvas on external monitor may not be available when using DeX mode on Galaxy devices with One UI 8.

We will continue to investigate the cause of this issue.

Galaxy devices with One UI 7 or later cannot connect to a computer and use DeX mode.

See the following page for more information.