Original topic:

Samsung Dex Mode Cable Connection Not Working

(Topic created: 2 hours ago)
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detaylor0321
Constellation
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Galaxy S25
Hi I just got my Galaxy S25 Ultra and when I connect my phone to my external monitor with USB C - USB C cable it does not start Dex Mode. When I connect the external monitor with my Fold 5 and S23 Ultra it works no problem but I can't figure out how to make it work on the S25 Ultra without additional external power to the external monitor. It's always worked just phone to external monitor connecting until now. I've tried using multiple USB C cables and none of them work on the S25 Ultra yet all of them work on the S23 Ultra and Fold 5. Any help on how to get this to work? Dex Mode is turned on, phone is fully charged, I've also tried doing a factory reset and still no luck. 
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S24ultra101
Asteroid
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Galaxy S25
They got rid of this feature. I hope it comes back in a software update soon.
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