A new expansion board extends the Raspberry Pi Pico with cellular and GPS connectivity. Data transfer rates should be enough for many applications, and the board even includes a small LCD screen for good measure. A 4G version is available, also.
https://www.notebookcheck.net/Pico-2G-Expansion-board-adds-cellular-and-GPS-support-to-the-Raspberry-Pi-Pico.553534.0.html
I'm not sure about the point of the 2G version, in several countries the 2G/3G networks are going to get offline in a few years, others will probably follow later. :-\