The technology that enables wireless internet connections is Wi-Fi. Utilizing radio waves, Wi-Fi allows devices like smartphones, laptops, and tablets to connect to the internet without physical cables. It operates within specific frequency bands, allowing for high-speed data transfer over short distances. Wi-Fi networks are set up using wireless routers, which manage connections and assign IP addresses to devices, ensuring seamless internet access. This technology has revolutionized the way users access information and communicate, contributing to the growth of mobile and remote work.