Actually Mikes off hand comment strikes a particular nail on the head as a lot of previously unknown, at least not generally known, facts have come to light as a result of the Ukraine war. People were puzzled as how so many Russian senior officers were being to successfully taken out. Its was of course from their phones. Videos on Youtube show 'private' conversations between soldiers and their mothers or family. Their exact locations easily identifiable. Some evidence that a phone, which does not actually switch off unless you take the battery out, can be used to eavesdrop conversations.
However, this is not my reason for not having one, its simply that i would never use it. Its all email with me, off a desktop system. Archives go back 20 years or more, am I a dangerous man! LOL.
I had a mobile in a car when they were actually radio telephones, and one of the first cell phones. Then the wife died and then I retired, well sort off, but was at home all day, so the mobile fell into disuse. I now actually hate the things as I see with dismay how they are taking over peoples lifes. Planet of the zombies. No not for me, "Beam me up Mr Spock".