- Open the Settings menu on your Samsung device.
- Tap on Connections which should be the topmost setting.
- Now scroll to the bottom and tap on More connection settings.
- Select HDMI mode from the options.
- A small window should appear with the HDMI options — Samsung DeX and Screen mirroring.
Select either of the two based on your preference.
Answer from karthik nair on Stack ExchangeSamsung Community
eu.community.samsung.com › samsung community › products › tablets
Solved: Galaxy Tab S6 Lite not connecting to TV (via USB C - HDMI) - Samsung Community
December 16, 2024 - I finally bought a "Google Chromecast TV" device and it works brilliantly with my TV. I wish I had not bought the Samsung S6 Lite (inaddition to the restriction put in by Samsung its battery life is pathetic). ... @TTS777: I'm not sure that it's possible to screen mirror using a standalone USB C to HDMI cable, as you may require an adapter similar to the one linked below (for reference only, as this is from the US site) https://www.samsung.com/us/mobile/mobile-accessories/phones/usb-c-to-hdmi-adapter--black-ee-hg950dbe...
Samsung Community
eu.community.samsung.com › samsung community › products › smartphones › other galaxy s series
USB-c to HDMI not working on S20FE - Samsung Community
January 9, 2023 - I have been using USB-C to HDMI to connect my phone to an older Samsung TV that doesn't support SmartView without any issues for a while. Recently this stopped working and neither screen mirroring nor Dex works. If I use the same set-up with my old S8 it works just fine, so it can't be the cable.
Galaxy s20+ HDMI cable not recognized - Android Enthusiasts Stack Exchange
I have a galaxy S20+ and a generic USB c to HDMI cable. I connected the phone to a Philips monitor but I don't see anything on the monitor and in the USB settings I only see USB controlled by: conn... More on android.stackexchange.com
external keyboard - USB-C port not working as a host to use with USB OTG or HDMI adapter - Android Enthusiasts Stack Exchange
I have a Samsung Galaxy A9 which I'm trying to connect to an external HDMI display by the means of a commonly-found USB-C to HDMI adapter like this one. Connecting the USB-C input "lights up&q... More on android.stackexchange.com
Can't get HDMI output - SOLVED | Early Bird Club
Samsung Tech Support said that "some S21s don't have HDMI out." What?!? They want me to bring my phone into a local repair shop to see if they can figure it out. This seems like utter nonsense to me. ... The problem has been corrected! I went to the repair shop and they had it working in 5 minutes. The issue? My USB ... More on forum.earlybird.club
USB-C to HDMI doesn't work. (using my Samsung as a track pad for my laptop)
Your laptop has an HDMI connection: yes. Your laptop does NOT have an HDMI IN connection. Your laptop has an HDMI OUT connection. Your laptop is not a monitor for external input devices. It doesn’t work because it isn’t designed to work this way. That simply won’t work the way you imagine it will, because you need HDMI IN on the laptop, and you only have an HDMI OUT on the laptop. I’m not sure why everyone isn’t telling you this. If you plug a Google TV or Firestick into your laptop, it will also not work. You have an OUTPUT, not an INPUT. More on reddit.com
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December 2, 2024Videos
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Dockteck
dockteck.com › home › troubleshooting usb-c to hdmi adapter: tips for fixing this common issue
Troubleshooting USB-C To HDMI Adapter: Tips for Fixing This Common Iss – Dockteck
January 26, 2023 - Sometimes the USB C to HDMI may not work properly because the device cannot recognize the connection properly. Therefore, connect the adapter to Samsung S8 first. Do not engage with the HDMI and the power cord.
Top answer 1 of 3
1
- Open the Settings menu on your Samsung device.
- Tap on Connections which should be the topmost setting.
- Now scroll to the bottom and tap on More connection settings.
- Select HDMI mode from the options.
- A small window should appear with the HDMI options — Samsung DeX and Screen mirroring.
Select either of the two based on your preference.
2 of 3
1
Just a guess, maybe you should press dex in the drop down menu quick panel icons? You might need to edit the quick panel and drag it down.
Otherwise, you can try (search "dex settings" in settings) to enable auto start when hdmi is connected.
I find it easier to search in settings, because searching in finder requires more keywords.
Sometimes it's easier to edit the Dex settings when you first connect it wirelessly to windows, because there are more settings when it's turned on.
Finally, I'm not sure Dex needs to be used at all when connecting to a display. Check your HDMI cable if it supports the right protocols (usb 3.1, mhl, hdmi alternate mode).
And ofcourse, set the input source of your Philips dislay to HDMI.
Vcom
vcom.com.hk › shows › 169 › 438.html
How to Solve USB C to HDMI Adapter/Docking Not Working - Blog - - VCOM International Ltd
A damaged HDMI cable or a malfunctioning adapter can prevent the signal from being transmitted properly. ... Verify that the USB-C port supports video output: Check your device’s specifications or user manual to confirm that the USB-C port supports DP Alt Mode.
Cabletime Tech
cabletimetech.com › home › knowledge › knowledge
Troubleshooting USB-C To HDMI Adapter: Tips for Fixing This Common Issue
December 13, 2023 - To address this issue, adjust the display resolution settings on your device to match the supported resolution of the external display. If the resolution is not matched, the signal may be interrupted.
Samsung
samsung.com › home › product help & support › mobile › how to use a samsung usb-c to hdmi adapter
How to use a Samsung USB-C to HDMI adapter | Samsung Philippines
You can connect your mobile device to an external display using an HDMI adapter (USB Type-C to HDMI). Connect an HDMI adapter to your mobile device. Connect an HDMI cable to the HDMI adapter to a TV or monitor’s HDMI port. On your phone’s screen, tap Start. The Samsung DeX screen will appear on the connected TV or monitor without changing your phone's screen. This feature is only available on the following devices: ... The information provided about the listed models may not cover all the details.
Anker
anker.com › home › blog center › hubs-and-docks › step-by-step guide: how to use usb-c to hdmi android
How to Use USB-C to HDMI Android Seamlessly 2025 - Anker US
October 28, 2024 - First, ensure your phone supports video output via USB-C (DisplayPort/HDMI Alt Mode)—not all Android devices do. Also, confirm the cable and adapter are compatible and functional.
VentionTech
ventiontech.com › home › blog › blog
How to Connect Phone to TV HDMI Using USB-C: A Clear Guide for Seamless Viewing
October 13, 2023 - If your USB-C to HDMI is not working, consider these possible reasons: Compatibility issues:Ensure your phone and TV support USB-C to HDMI connections. Connection problems:Check if the HDMI cable is securely connected to the adapter and the TV.
Bruisah's Blog
bruisah.wordpress.com › 2022 › 07 › 04 › samsung-dex-mode-not-working-with-hdmi-wired-connection
Samsung DeX Mode Not Working with HDMI Wired Connection | Bruisah's Blog
September 22, 2022 - Summary: (to avoid tl;dr syndrome): If Samsung DeX doesn't work on a wired USB-C - HDMI adapter, try externally powering the adapter rather than have it powered via your smartphone USB-C connection.
Early Bird Club
forum.earlybird.club › tech forums › smartphones
Can't get HDMI output - SOLVED | Early Bird Club
October 2, 2022 - Samsung Tech Support said that "some S21s don't have HDMI out." What?!? They want me to bring my phone into a local repair shop to see if they can figure it out. This seems like utter nonsense to me. ... The problem has been corrected! I went to the repair shop and they had it working in 5 minutes. The issue? My USB port was dirty, so it couldn't make a connection.
Samsung Community
us.community.samsung.com › t5 › A-Series-Other-Mobile › Cannot-connect-Samsung-A35-phone-from-it-s-USB-port-to-an-HDMI › td-p › 3202037
Cannot connect Samsung A35 phone from it's USB port to an HDMI monitor
April 23, 2025 - I've got several Samsung USB-C to HDMI adapters and several HDMI cables, and all of them work just fine with my two other phones (the Note9 and the S21), so I have already eliminated the cables and adapters as the possible problem. And as stated previoiusly, there is no setting in the A35 anywhere for DeX and there is no setting for Mirroring displays.
Samsung
samsung.com › us › support › troubleshoot › TSG10001535
External display troubleshooting for Samsung DeX
A faulty cord or wire may impact connectivity. If the DeX program doesn't fill the screen or looks distorted, you may be able to adjust your display to work better with DeX. If your display's native resolution is not 1080p, you may need to adjust ...
Uni Accessories
de.uniaccessories.com › home › blog
[Solved] USB C to HDMI Adapter Cable Not Working in 2023 - uni
That means, no matter which UBS-C to HDMI Adapter, or USB-C to HDMI Cables you use, you cannot stream things to TV from Samsung Galaxy A02s. ... It is 100% sure that all 4 USB-C ports of MacBook Pro 16'' 2021 supply DP Alt Mode, but there is still got chance that you can not use the USB-C to HDMI Adapter normally. Please confirm your UBS-C port function well, and the HDMI to HDMI cable works properly.
Reddit
reddit.com › r/samsungdex › usb-c to hdmi doesn't work. (using my samsung as a track pad for my laptop)
r/SamsungDex on Reddit: USB-C to HDMI doesn't work. (using my Samsung as a track pad for my laptop)
December 2, 2024 -
Hi. i got a S24U and when i connect it to my HDMI port on laptop nothing happens, it just says "charging connected device via usb" on my phone.
I want to use my phone as a track pad / drawing pad for my laptop.
Windoes 11, OneUI 6.1, UGREEN usb-c to hdmi 4k cable
Top answer 1 of 5
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Your laptop has an HDMI connection: yes. Your laptop does NOT have an HDMI IN connection. Your laptop has an HDMI OUT connection. Your laptop is not a monitor for external input devices. It doesn’t work because it isn’t designed to work this way. That simply won’t work the way you imagine it will, because you need HDMI IN on the laptop, and you only have an HDMI OUT on the laptop. I’m not sure why everyone isn’t telling you this. If you plug a Google TV or Firestick into your laptop, it will also not work. You have an OUTPUT, not an INPUT.
2 of 5
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The more I read this post the worse it gets
Plugable
support.plugable.com › video connector adapters, converters, and cables › usbc-hdmi-cable
Can't get the USB-C to HDMI 2.0 adapter to work - USBC-HDMI-CABLE - Plugable Support
December 1, 2018 - Hello, I bought the 1.8m USB-C to HDMI cable because I found some people online with the same device I have (Samsung Galaxy Book 12") that had success displaying 4k@60Hz with a similar USB-C to HDMI adapter from Plugabl…
Microsoft Learn
learn.microsoft.com › en-us › answers › questions › 4053891 › samsung-monitor-not-working-with-satechi-hdmi-to-u
Samsung Monitor not working with satechi HDMI-to-usbc port - Microsoft Q&A
March 16, 2024 - Cannot give a guarantee for an HDMI converter? Few converters work properly few may not. ... Hi Robinson and thanks for your help. the adapter is a SATECHI USB-C MULTI-PORT ADAPTER 4K WITH ETHERNET V2
Top answer 1 of 4
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Hello Janette_Z,
As part of troubleshooting this problem, I connected my Huawei Phone (which has a USB C port) to the Samsung monitor using the Alogic adapter and HDMI cable and it worked. The phone screen was displayed on the monitor. To my reasoning, this tells me that the adapter and cable work with the monitor.
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Hi, dame alice!
Thanks for reaching Microsoft Community and posting your concern regarding your Samsung monitor to your Surface Pro 7 via Alogic USB-C to HDMI adapter. We appreciate the time you have given and we apologize for the troubles you have to go through.
You mentioned that you are using an HDMI 2.0 cable. Is this the same cable that came in with the Samsung monitor? Can you try out a different HDMI cable? Please make sure it is an active HDMI cable, not a passive kind.
Looking forward for your response.
Regards,
Janette_Z
Samsung Community
us.community.samsung.com › t5 › Computers › Native-HDMI-Port-Not-Working › td-p › 2974290
Solved: Native HDMI Port Not Working!! - Samsung Community - 2974290
August 6, 2024 - I have a brand-new Galaxy Book3 15.6", i5, 8GB. Whenever I connect an external display through the native HDMI port, with a high quality HDMI cable, it does not work! As soon as I connect the external display through USB-C it does work... External display supports both HDMI and USB-C connectivities....