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Turn your phone off. :)

Seriously. There is no other option. Only niche local providers won't share with these types of companies.

> Only niche local providers won't share with these types of companies.

That is what I am looking for! Do you know where to find those providers?

US Cellular and Metro PCS maybe? Only two that spring to mind.

A bit naive to believe that the soft power button or airplane mode disables periodic tower pings. A removable battery and shielded bag would be the minimum precaution.

Phones wake up about every 30 minutes or so when "powered off". Explicitly to report loction and perform background chores. So you are right. Even the removable battery is suspect. A foil/metal lined bag does the trick. Or a chip bag: https://www.google.com/amp/s/www.popularmechanics.com/techno...

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