Does GPS work on a separate chip or is GPS built into the LTE modem?

[Mikoduso]

but still uses the Qualcomm binary firmware for the radio layer

Thanks.
Is it possible to replace the radio firmware?

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Hi.
Pinephone.
Does GPS work on a separate chip or is GPS built into the LTE modem?

in the LTE modem module.

Why was it decided to use the GNSS module as part of the LTE modem, and not separately?
Indeed, if the radio modem has a backdoor for remote connection and control, then the functionality of the GNSS module can be disrupted and the coordinates will not be correct.