Fibre optic internet runs via special glass cables under the ground. It doesn't require the copper wires used for your landline, like standard ADSL broadband, so it's faster and more stable. Currently, the 'up to' speeds for fibre optic broadband max out at around 100Mbps, but BT and Openreach have tapped into a new 300Mbps connection that should be available from selected internet service providers soon.
...What is WI-FI ?
Wi-Fi is a wireless networking technology that allows computers and other devices to communicate over a wireless signal. It describes network components that are based on one of the 802.11 standards developed by the IEEE and adopted by the Wi-Fi Alliance. Examples of Wi-Fi standards, in chronological order, include: 802.11a, 802.11b, 802.11g, 802.11n, 802.11ac.
...How works mobile broadband internet? Mobile broadband is the marketing term for wireless Internet access through a portable modem, mobile phone, USB wireless modem, tablet or other mobile devices. The first wireless Internet access became available in 1991 as part of the second generation (2G) of mobile phone technology. Higher speeds became available in 2001 and 2006 as part of the third (3G) and fourth (4G) generations. In 2011, 90% of the world's population lived in areas with 2G coverage, wh...