According to Qualcomm, 5G mmWave connectivity will soon become a worldwide reality, with a particular focus on Europe in the next few years. But while 5G mmWave infrastructure is on its way, few devices sold in Europe support the faster 5G standard.
https://www.notebookcheck.net/5G-mmWave-connectivity-is-finally-making-its-way-Europe-wide-with-promises-of-Gigabit-speeds.548139.0.html
10-20 megabaits in reality, like a wave. only when phone is front of outside window.