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by Barbing 15 hours ago
Been asked that before—don’t always use one. Insurers will have to buy that data from the telecom if my phone’s on.

Not sure how common it is for Verizon, AT&T, Google (Maps), Apple (Maps) to sell to insurers (or brokers who insurers use). Perhaps pretty common? I’m sure they often can deanonymize it if they do.