I have a S10 5G, when I go into advanced settings for the hotspot and click on Use 5g when available, activate the hotspot it is invisible to all devices.
So so frustrating, 2.4ghz hotspot is fine.
What devices are you trying to connect to the hotspot? Because it is possible, that they doesn't support 5GHz.
Good idea, it worth a try.
I am having the same issue, but check again and see what channel your AP is at .
I am observing that it only sees AP's that are in the lower 5G band, not the upper one.
Of course everyone in the UK has got this issue, but Samsung just dont care...
As one of the others has mentioned... EU / UK wifi devices @ 5 ghz use the lower tier channels, so do not scan in the upper tier 100+, so when Samsung sell there devices in the UK / EU what channel did they use 149!!!
The only exceptions to this and if your lucky, are devices that are implemented without the region cap, like some of the more exotic pc / motherboards which can use the whole spectrum.
Did you ever resolve this? I'm getting the same on my A90. 2.4 works absolutely fine, but the SSID isn't visible when I switch to 5. I know it's not my PC because the 5GHz band worked fine from my old Moto Z2.