Original topic:

SOLVED- S22 Ultra- Samsung Dex failing on LG TV- Note 10+ always worked

(Topic created on: 03-22-2022 04:38 AM)
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radiocricket
Beginner Level 2
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Galaxy S

I am definitely not in love with my new S22 Ultra and have been delaying sending in my Note 10+ trade in as it never gave me any issues.  I guess newer is not always better!

The most frustrating problem I have is with using Samsung Dex on my S22 Ultra to broadcast from my phone to my LG TV.  I was able to do so with my Note 10+ with no issue.  While Samsung Dex connects and the interface appears on the screen.  I immediately see a small message that my TV is not optimized for wireless display connection (or something like that).  I can navigate to my gallery and select a video to watch.  It will start the video for a second or so and then it freezes and shortly after severs the Dex connection.  I will sometimes get a message to make sure there's nothing blocking the phone to TV (there isn't).  Both the phone on the TV are on the 5GHz band of the router.  The TV is a 2020/2021 model- LG OLED65CXPUA.  Is there anything I can do to fix this issue?

3 Comments
radiocricket
Beginner Level 2
Galaxy S

I ended up factory resetting my LG TV twice as I noticed the apps weren't updating (firmware was up-to-date).  It wasn't until I switched the TV back to the 2.4 GHz wireless band that the apps would update.  I tried Dex again and it was better but still not what I would consider working.  Then I connected my S22 Ultra to the 2.4 GHz wireless band and......Dex works!!!  So, so odd given the TV and my phone are both within 10-12 ft of our router.  Hopefully this can help someone else!

Tonylmiller
Beginner Level 2
Galaxy S

This is interesting because an existing wifi network is not required to use wireless DeX.  I use it while camping all the time without any wifi network.

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cafeine
Beginner Level 2
Galaxy S

I registered just to say HUGE THANKSSSSSSSS man....

I am in love with my Fold 3 and now Fold 6, my only issue the past year was Dex on LG TV over WiFi. It was working fine in the past, but then I changed routers which worked in auto WiFi mode (so mostly 5Ghz) and the issue started happening all the time. Never thought that the Wifi band would be the core issue and I had tried everything else. 

Now Dex is running smoothly again I am back to 100% happy with my phone. 

Thanks again for posting this. The power of the internet is awesome

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