Such technology has brought not only greener but safer and cheaper future of communication. It has gained a huge popularity in two years of its invention. The concept of Li-Fi is data communication on fast flickering of light which is not detected by human eye but it is focused on photo detector which converts the on-off state into binary digital data. Li-Fi has thousand times greater speed than Wi-Fi and provides security as the visible light is unable to penetrate through the walls, which propose a new era of wireless communication. Next, tap the Flashlight icon to turn the light on or off. Li-Fi has more capacity in terms of bandwidth in visible region therefore it does not poke its nose in other communications which uses radio frequency range, without taking its frequency bands. To use the flashlight, open the Quick settings panel by swiping down from the top of the screen using two fingers. The Li-fi technology was invented by Professor Harald Hass of University of Edinburgh. This paper proposes a survey on Li-Fi Technology. Li-Fi or New Life of data communication is a better alternative to Wi-Fi in wireless communication. In the days where internet has become a major demand, people are in a search for Wi-Fi hotspots. Li-Fi or Light Fidelity refers to 5G Visible Light Communication systems using light-emitting diodes as a medium to high-speed communication in a similar manner as Wi-Fi.
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