Does GPS require an installed simcard?

[wibble]

Has anyone tried it? While GPS itself doesn't require a SIM or mobile connectivity, some integrated chipsets won't let you use GPS if the SIM isn't present, for reasons not usually disclosed by the manufacturer. You probably need to disable ModemManager, connect to the serial interfaces and enable GPS manually, since ModemManager requires the SIM to be present before it will accept the gps enable command, even if the hardware doesn't, at least according to:
https://gitlab.freedesktop.org/mobile-br...issues/183
I don't know if oFono has a similar issue.

You can always fetch the AGPS data via wifi - it will significantly improve your chances of getting a GPS fix.