You might want to look around the Pinephone and Pinephone Pro communities. Both phones use the EG25-G modem, chosen for better worldwide band availabilities, rather than splitting the Pinephone in "EU" and "NA" batches.
Users also are working on providing a mostly liberated firmware for the modem:
Users also are working on providing a mostly liberated firmware for the modem:
- https://github.com/Biktorgj/pinephone_modem_sdk