Broadband is the fixed-line service that allows you to connect to the internet. WiFi is a convenient way of connecting your devices to your broadband service without using a cable.
WiFi signals are transmitted through your home over two radio frequencies, 2.4Ghz and 5GHz. These are public frequencies used by everyone, and so interference from other Broadband routers can occur, as well as interference from other household appliances.
2.4 GHz is the standard frequency and there are many devices that can only operate on this frequency. Other non-internet related items in your home may also use this radio frequency, such as cordless telephones and baby monitors.
The 5Ghz network is a higher frequency network. The network provides less coverage but with faster speeds. We would suggest connecting devices such as your TV, or gaming consoles to this only if they are in close range to your router.