Today, (February 19, 2019) Qualcomm has launched its second modem for use with 5G-New Radio (5G-NR): the Snapdragon X55. It is rated to support download speeds of up to 7 gigabits per second (Gb/s) and upload speeds of up to 3 Gb/s. Unlike its predecessor, the X50, this modem is also compatible with 2G, 3G and 4G.
https://www.notebookcheck.net/Qualcomm-has-announced-the-new-2nd-gen-5G-Snapdragon-X55-modem.410381.0.html