Issue: S24 Ultra suddenly not detectable via USB-C on any operating system (Ubuntu, macOS, Win)

[Joel_Yancey]

This is my fourth Samsung Galaxy device. I have never experienced an issue as confounding as this.

Specs:

• Samsung Galaxy S24 Ultra, 512GB
• Phone model: SM-S928U
• Android version: 14

Notes/symptoms:

• By "suddenly" -> I mean suddenly. I have owned this phone for approximately 3 months. During that time, everything was working fine with USB-C data transfer to computer. Now it is not detectable.
• By "not detectable" I mean it will not trigger any notification on either device (phone or computer), nor will it receive a charge
• Device has no issue charging over USB-C when plugged into a wall outlet, however it will not charge over USB-C when connected to a computer.
• Device is in pristine condition, was purchased new from T-Mobile, is not rooted, and has had no other issues.
• It is NOT the cable. I have tried multiple high-end cables, including the one that it came with. As a former systems administrator, I am certain that it is not the cable.
• It is not the computer. I have tried various operating/hardware systems: Ubuntu 24.04, macOS 14.4.1 and 12x, Win11. The OS I was previously in the habit of connecting this device to with USB-C is macOS.
• The only odd thing I've done, is rather than using Android File Transfer, I had previously been using the OpenMTP application on macOS for file transfer between my MacBook Pro and S24 Ultra. This was working great for 3 months. I don't think this is related to the problem, but it ought to be noted.

Things I have tried:

• Rebooting, everything, a bunch
• Connecting to various operating/hardware systems: Ubuntu 24.04, macOS 14.4.1 and 12x, Win11 (it's not the computer... it's the phone)
• Connecting with different quality cables
• Uninstalling recently installed apps, turning off Nova Launcher
• Wiping cache partition
• Reseting USB Port Settings, as described here: https://eu.community.samsung.com/t5/galaxy-s22-series/usb-c-port-not-working/td-p/5546501
• Tweaking every Android setting I can think of

Grievances:

• The lack of an SD card slot on the s24 Ultra is infuriating! It has magnified the impact of this issue 10-fold. I have no way to-- locally --retrieve or backup nearly 500GB of data off of my device. What are my options? Attempt to Bluetooth 500GB of data? The lack of an SD card socket is inhumane .

I am now attempting to wirelessly send half-a-terabyte of phone data to the "cloud" as the kids call it lol! Expecting that to take some 24 hours. Then I will perform a factory reset since it's the only thing else I can think of to try. Please help. Please don't make me send my phone to fix this.

Has anyone else experienced this?

[ArtDesk]

An external TB drive will work. Or should work since you are stating it is struggling.

[ArtDesk]

I hate to be the bearer of bad news, but something is wrong with your device. I just plugged my S23U into 5 devices, and even the older ones like Tab 7 it will charge from. Had 3 choices or more from the devices 2 tablets, 2 laptops, and one phone.

[ArtDesk]

Windows 11 is the only one I didn't get a pop up notification for but I got an audible beep. My phone each time had the charging status and how long to charge. Either on it or on the other device screen.

[Joel_Yancey]

Well something definitely changed in my case. My S24 Ultra was connecting just fine for other devices, until it suddenly ceased to do so. As far as an external drive workaround--unfortunately, nope. I connected an external 4TB SSD formatted as exFAT--although I am not certain if this is the correct format--and that is not detected. Although, I had never tried this when the phone was working normally so I cannot ascertain whether this is symptomatic of the problem.

I am preparing to factory reset now. I will report back the result.

[Joel_Yancey]

Update: Factory reset did NOT fix the problem. Arghh!

I found this post in the Android support forum where FIFTEEN other individuals have reported the same or a similar issue with the S24 Ultra:

https://support.google.com/android/thread/259742691/samsung-s24-ultra-can-t-connect-to-mac-cablely

What to do now... 😞

[Stoufferb23]

Yep factory reset will not in most cases fix this. I'm going through it again for the 2nd time on my s23 ultra, I've had my s24 ultra since release date but haven't started using yet lol (So obvious easy fixe is there for me) But I want my s23 working as it should. This is got to be something in the firmware. I tried clearing cashe on USB but nothing. No audio from port and moisture/foreign object in port present.

[Lamorenavaldez]

I'm having the same issue with my phone,I can't connect my headphones to my cell 😒

[Tonychar]

So, have i. I have just connected my brand new S24 Ultra to my WIndows 11 desktop. It shows the phoen in the WIndows Explorer and i can copy file from within the WIndows system but when connecting to Good Sync synchronizer it is nto visible.

[STRATA]

IS DEVELOPMENT ACTIVE ON YOUR S24? IF SO TURN IT OFF UNLESS YOU NEED FOR DEVELOPMENT REASON AND IF SO DOUBLE YOUR USB SETTINGS