Though smartphone Internet connection is available via mobile access, depending on location, such access is not always at high speed, sometimes not available, and in some instances when available costly. With Wi-Fi capability, if close to a Wi-Fi access point, a smartphone can typically access the Internet at very high speeds and no cost. Wi-Fi 6/6E and Wi-Fi 7, the latest releases following Wi-Fi 5, are designed to facilitate high-density wireless access and high-capacity wireless services in locations such as high-density sports arenas, indoor high-density offices, large-scale outdoor public venues, etc. Compared to Wi-Fi 5, these later technologies employ technologies such as OFDMA, downlink and uplink multi-user MIMO, higher order modulation, etc., that allow them to significantly increase maximum data rate, average user throughput, and number of concurrent users. Examined in this chapter, for Wi-Fi 6/6E and Wi-Fi 7, are the Internet access network architecture, the RF spectrum supported, the protocol architecture, the physical layer and key technologies employed therein, and some new procedures for improving medium utilization and battery efficiency. Finally, a comparison between Wi-Fi 7, Wi-Fi 6/6E, and Wi-Fi 5 is presented.