@Hsabun the 5ghz is enabled but in order for you to test it you need a 5ghz Hotspot to connect to. If you have one but you can't connect it, can be for multiple reasons like low signal, bad password or not allowed Mac address.
@Hsabun is the 5ghz SSID (Name) the same as the 2.4ghz? When you see the connection available thru the iPhone, can you check if the network signal if it's considerably low?
