Same. I will provide a simple temporary fix. But as soon as you unplug the USB-C wired earbuds, or headphones, the phone will not recognize them again, until you repeat this solution:
1. Plug in the wired headphones or wired earbuds
2. Power off your phone
3. Press and hold the power key and volume up key together to wake phone
4. Use the down volume key to navigate to "wipe system cache"; use the power key to select; use the volume down key to reboot phone now
Once you go into your phone open up any media player, your wired earbuds will work until you unplug them, you will have to plug them back and repeat the above temporary solution.
Back story: my uncle gave me his brand new in the box S25 Ultra, my wired usbc buds were working for three whole days and three whole nights with the phone, no problems, the buds also work on all other devices everywhere, so the problem is not the buds compatibility, and not the phone at all. Suddenly after going from bluetooth speakers to my wired buds. The phone stopped recognizing the wired buds since.
This temporary solution works as long as you plug the earbuds in while performing the wife system cache reboot. So it leads me to conclude, that this is a system wide issue, call it firmware or what you like. This is an issue Samsung should deal with in future firmware updates because when I took the phone into an official service centre. They determined that nothing is wrong physically with my phone to cause this bug. But no one is willing to do anything. They only try hard to up sell me to their latest bluetooth accessories! Shame!
Good luck.
