Also a major bluetooth issue (not connecting to certain devices) in the UK, which was reported from launch. I have two devices! Samsung seem to be keeping that quiet also! See below:
If you're experiencing Bluetooth issues with your Samsung S25 Ultra in the UK, you might be encountering common problems like intermittent disconnections, inability to pair with certain devices, or audio glitches, which could be related to software bugs, device range limitations, or issues with the Bluetooth device itself; try restarting both your phone and the Bluetooth. Nothing works! My S24 ultra had no issues deleting old devices and reconnecting. Poor, poor, poor without swearing!