Xiaomi has showcased the fact that 5G is for IoT devices too. This was done via a Tweet by a company spokesperson, containing a video showing how quickly the 5G-enabled variant of the Mi Mix 3 could relay commands to a connected lamp. Therefore, 5G may be an exciting prospect for smart-home fans too.
https://www.notebookcheck.net/Xiaomi-uses-the-Mi-Mix-3-5G-edition-to-demonstrate-next-gen-IoT.376841.0.html