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?

[Joel_Yancey]

@STRATADevelopment mode is off. I am afraid "DOUBLE [check] YOUR USB SETTINGS" is not helpful.

[STRATA]

SWOP FOR A REPLACEMENT ITS UNDER STANDARD WARRANTY IF IT IS ONLY 3-4 MONTHS OLD

[U22blk23]

Usb-c jump drive. Loads on sd card.
Load in computer

[Joel_Yancey]

The USB-C port isn't working for data like I've mentioned several times. I just used wireless FTP. Learned how easy that was at least. Guess I can't use USB-C for data unless I send in my device on warranty.

[OblivionThrone]

Have you turned off your Auto Blocker?

[ricketypumpkin]

This ^^^ Auto blocker is such a pain. I immediately turn it off the second I power my new Samsung phones on. It can cause some seriously whacky and unpredictable behavior when utilizing the USBC port for data or anything to do to with FTP/PTP connections. Best to just enable it, uncheck the two enabled boxes, then disable it again.
*Note: You must first enable Auto blocker to disable the two enabled blocking options, then you are free to disable it again.
I have low hopes this solves your issue as the S24U shipped with Auto blocker, so technically you should have had issues immediately, but it's worth a shot at this point.

[Joel_Yancey]

I appreciate your suggestion @OblivionThrone and your input @ricketypumpkin. Sadly Auto Blocker is OFF and has always been OFF. I do not use this feature.

[OblivionThrone]

It sucks when your device has a way of not responding the way it should. Yeah USB... my only other suggestion before trying a port reset is in the included image.vGood luck. Try all 8 methods.

[TechToTravis]

Hi there,

I ran into the same problem as you. The only workaround I've found is to use a USB-C to USB-A cable, even though it's not ideal. It works fine for me that way.

My USB-C to USB-C cable just doesn't work with my S24 Ultra, even though it works with other phones and laptops. Strangely, the USB-C to USB-C connection worked when I tried it with my friend's Mac. Not sure if it's an issue with my laptop or the S24 Ultra's port, but hopefully this helps for anyone in the same boat.

[Joel_Yancey]

@TechToTravis  Oh my god that worked. USB-C to USB-A actually worked. So stuff is wrong with the S24 Ultra's port...?! That will work in a pinch, I guess.

I am torn as to whether to accept your reply as the solution. I wish I could accept it as the workaround.