Mobile phones are often used to connect to the GSM network.
Since no phones that could potentially support Replicant have free software firmware for the modem, currently, the only possible way to avoid location tracking by the phone network is to have the modem powered off.
Implementing some tricks to make location tracking harder or not reliable with free software modem fimrware has not be done to my knowledge, and I don't know in which extend it is possible.
It is desirable to document its limitations of it on each phones, and to add support for a way to easily turn off the modem.
This will look into alternative protocols that could be used to get location privacy.
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