not for jolla c, considering is developer device..at least if you have bought it together with the developer program.
in this case, they are selling just the device,it does mean that the device in itself is the value and thus..it has to have warranty.

coderus, why do you think that installing modem.software as explit says you wont be able to catch the network at all?
sorry but i am curious and i dont know anything about that