Wifi 5g

[RobsonAndry]

What is the problem that often does not find wifi 5ghz samsung s21 ultra

[Judebroo]

Try reset all settings on your phone. If this doesn't work. Go into reboot mode and clear cache.

[The-Kid-Deė]

Maybe the network you are trying to connect to is hidden

[Ash_42]

What is the your router brand and model number?

For example, the Asus AC66U-B1 generates a WiFi5 that only works when there is good line of sight (LoS). It is also a buggy router that will disconnect a single device for no reasons.