There's other related threads but Samsung hasn't adressed the issue and just closes the thread after sharing a cookie cutter solution that does not work.
Several Samsung users cannot link their Nintendo Switch consoles with their smartphones to easily transfer screenshots.
This has most likely to do with the update to latest OneUI, as I noticed that everyone that complained about this issue claimed to have higher end phones who got this update first. I have an A71 so I only got the update a week ago or so and ever since then I haven't been able to use this feature.
The console provides a QR code to scan and automatically connect to the console's wifi and transfer the files but ever since the update the connection fails and even trying to manually connect with a password fails (incorrect password).
It would be great if Samsung patched/fixed this (and no, the solution provided in other threads does not work).