Concerning LTE bands… the new Motorola Moto G04s also uses the Unisoc T606 SoC, so the LTE bands should be the same for the Jolla C2 (I prefer using “C2” to “CP”, on an unrelated note…): Motorola Moto g04s: Technische Daten, Test, News, Preise (in German, but the table should be self-explanatory for English readers as well).
@teleshoes According to said table, at least Band 5 should be available for the US.