[SOLVED] USB-C to 3.5mm adapter with Earphones not working (Galaxy Note 10+)

Oct 22, 2017
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I bought a Samsung USB-C to 3.5mm adapter to use with a pair of Samsung earphones but when I plug it into the phone the music comes through the speakers. Any ideas on how to fix this?
 

B. Diddy

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Re: USB-C to 3.5mm adapter with Earphones not working (Galaxy Note 10+)

Are you able to test the adapter on another device? It should also work on a laptop with a USB-C port.
 
Oct 22, 2017
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Re: USB-C to 3.5mm adapter with Earphones not working (Galaxy Note 10+)

Yes, I have a Samsung A7 that I plugged it into with earphones and it worked fine
 

B. Diddy

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Re: USB-C to 3.5mm adapter with Earphones not working (Galaxy Note 10+)

Make sure the phone's USB port is completely clear of debris -- use a can of compressed air to blow it out, or a computer vacuum to suck it out.
 
Oct 22, 2017
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Re: USB-C to 3.5mm adapter with Earphones not working (Galaxy Note 10+)

I tried it a few minutes ago and it didn't change anything. I don't know if this matters but I have tried other adapters and I was getting a notification on-screen saying that what I plugged in wasn't compatible but I do not get that notification when I plug the Samsung one in - does this perhaps rule out a hardware error? I wonder if I can run a code on the phone to check the hardware.
 
Oct 22, 2017
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Re: USB-C to 3.5mm adapter with Earphones not working (Galaxy Note 10+)

Yes, unfortunately - not sure what else to do - iv cleaned the port, reset the settings, done a master reset etc
 

B. Diddy

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Re: USB-C to 3.5mm adapter with Earphones not working (Galaxy Note 10+)

Have you tested that dongle with another pair of earphones?
 
Oct 22, 2017
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Re: USB-C to 3.5mm adapter with Earphones not working (Galaxy Note 10+)

Tested with Samsung, Sony & B&O earbuds.... & three branded dongles including samsung originals
 

B. Diddy

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Re: USB-C to 3.5mm adapter with Earphones not working (Galaxy Note 10+)

That pretty much makes it a problem with the firmware or hardware. The only things left would be to reinstall the firmware or bring it to a repair shop. Sorry!
 
Oct 22, 2017
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Re: USB-C to 3.5mm adapter with Earphones not working (Galaxy Note 10+)

I am putting a summary here to help anyone who may have the issue in the future - the issue has been resolved

The initial problem was as noted in the title of this post

Symptoms that constituted the problem
1. It charges as normal, 2. can connect via HDMI, 3. cannot be connected to the PC (that might just be the because I have a Win7 - not sure), 4. cannot connect to earphones via a USB-c to 3.5mm Jack even though they are both original Samsung accessories. 5. I cannot say whether a USB-C set of earphones works because I don't have any. 6. however, I doubt they would as the USB-c to 3.5mm setup works on my other Samsung phone without any issues. 7. Yet I know the adaptor has not been rejected by the system because I also tried a Huwaei & other USB-C adapter and it said that it was incompatible

In addition, I have noticed that when I use Dex through a hub it will not allow connections other than the HDMI connection and the USB-C power in. This seems to contrast with the experience of other users who can use their USB 2 & 3 along with SD ports.

My Troubleshooting efforts
To date I have followed the 1. Samsung troubleshooting advice on this issue, 2. airbrushed the ports as advised, 3. reset all setting, 4. master reset, 5. used multiple adapters with multiple earphones etc, 6. adjusted a variety of USB settings and audio settings within developer options - ...sound still played from the speakers

How it was resolved
I contacted Samsung repairs and to cut a long story short the repairman said that the port on the phone delivered a limited functionality that would not necessarily be noticed in normal usage - he tested it and it came back as defective - they changed the port and it works as it should now - hope this helps someone
 

B. Diddy

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Re: USB-C to 3.5mm adapter with Earphones not working (Galaxy Note 10+)

Excellent! Thanks for summarizing.:) I marked this thread as SOLVED.