Internet speed is a major issue in today's world and everyone is encouraged to get the right data at the right time and place. Company, agencies, associations, entrepreneurs, for example. Network convergence is proposed to integrate multiple technologies. worlds to overcome the rapidly growing usage of digital devices and their demands placed for Internet services.The recently introduced convincing path to indoor communication networks is the combination of light fidelity (Li-Fi) and wireless fidelity (Wi-Fi), i.e. the hybrid Li-Fi networks (HLWNet). The evolution of connectivity (LI-FI), which will influence all lives, is expressed in this article. This form of network incorporates Li-Fi's high-speed data transfer and widespread Wi-Fi availability.It is a technology that can provide up to 10 Gbps of premium and more efficient and useful bandwidth than Wi-Fi probably. Li-Fi is not supposed to replace Wi-Fi entirely, but the two technologies can be used together to create more efficient technologies. In this paper, we present a survey on the introduction to Li-Fi and HLWNets which includes fast internet connectivity, infrastructure, and a broad spectrum of channels. Furthermore, the specific obstacles that HLWNets encounter and recent achievements are reviewed. We also elaborated it in many research directions.

Keywords : Li-Fi(Light-Fidelity);Wi-Fi(Wireless-Fidelity); LED(Light Emitting Diode);VLC(VisibleLight Communication); Wireless technology; network convergence; radio frequency (RF).