NR Dual connectivity (NR-DC) is a technique for improving user throughput in certain 5G scenarios. In this course, we present important aspects of NR-DC along with real-world UE logs to provide an in-depth, hands-on analysis of the concepts. We guide you through the processes by which a capable device establishes dual connectivity in 5G, how the data moves between the device and the base stations, and what occurs during mobility for an NR-DC-connected UE.