Wi-Fi, short for Wireless Fidelity, is a wireless networking technology that enables devices like smartphones, laptops, and tablets to connect to the internet without physical cables. It operates over radio frequencies, typically 2.4 GHz or 5 GHz bands, allowing users to surf the web, stream media, and communicate online from almost anywhere within range of a Wi-Fi router. Wi-Fi networks are widely used in homes, businesses, and public spaces. Security protocols like WPA2 help protect Wi-Fi connections. The latest Wi-Fi standards, such as Wi-Fi 6, offer faster speeds, improved efficiency, and better device support.