Method 1 Distinguish by Wi-Fi name
Usually, if the Wi-Fi name contains "5G"/"5g", the Wi-Fi signal is 5GHz. The same is true with 2.4GHz Wi-Fi.
Method 2 Distinguish the Wi-Fi frequency by the network details in your phone Settings
iPhones do not display the frequency in the Wi-Fi details.
If you have an Android phone and it is connected to a Wi-Fi network, you can confirm the frequency of the connected Wi-Fi by tapping the Wi-Fi name or the "info" icon at the right of the Wi-Fi name.
Method 3 Distinguish the Wi-Fi frequency by logging into the router's admin site
You can also enter the router's admin address in the browser address bar (usually the admin address is written on the router body) -> enter the admin password to go into the admin site -> click the wireless settings on the router admin page to check the frequency of the router.
Note: If you've enabled "Smart Connect" or something like that (as shown below), the SSID of 2.4G Wi-Fi and 5G Wi-Fi is the same. Under this condition, the camera will automatically connect to the 2.4G Wi-Fi.
Method 4 Confirm the Wi-Fi frequency by contacting the router's manufacturer
You can reach out to your router provider to confirm the Wi-Fi frequency.