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Location tracking of phones is out of control. Here’s how to fight back.
(arstechnica.com)
This is a most excellent place for technology news and articles.
If your phone is in a Faraday bag how would you get phone calls?
You won't, it's a conscious trade off. Some people never put a sim or esim in their phone and have a separate dumb phone for calls, or separate hotspot
This vide explains the trade offs, reason, and approach of havjng a separate device for data: https://www.youtube.com/watch?v=RyirQOCUUK8
And this guy shares his approach of not having a sim: https://www.youtube.com/watch?v=4Dei2buz1X0