Once you need to be online you must disable airplane mode, true, but you also must take your phone out of the silent pocket, no? At that point you “lost”.
"You wouldn't stand in front of a microwave all day. Rest easy known mobile EMF radiation isn't doing the same harm."
Oouf. Not a good look.
> 2. FOR THOSE LONG, working from home conference calls, block EMF radiation with air tube headsets.
https://silent-pocket.com/blogs/news/how-to-stay-healthy-and...
At that point the telco can roughly triangulate your position using the base stations that you're connected to. And determine who is nearby to you.
And better not tell the author of this article but this data has been made available to authorities for decades.
Sometimes people can surprise us; the author is least somewhat familiar with GSM networks, and perhaps you'd both enjoy a learning experience if you're able to share any additional information you have with them.
Totally oversold technology.
Not saying that telcos have shown any moral high ground with location data, even Google has this level of location tracking enabled for a considerable amount of people. I'm most worried about an Elasticsearch instance cropping up where somebody's bluetooth ID can be used to see how they get to work, etc. Faraday cage bag for phone seems like a reasonable solution.