You think you’ve private lives think nothing of the kind.
There is no true escape. They’re watching all the time.
Apps, settings, there is no way to shut it off. smart phone or flip phone. The tracking is always on no matter what you do. Text, camera, mic, GPS, tower pinging, RF ID, WiFi, Internet of Things, and bluetooth even if you “think” they are all off.
It is all tracked by your carrier and it is shared with the government. Some will even give you an ORDER to uncover your selfy camera if you cover it. You have to turn it off and back on to get rid of the order and lockup.
Illegal? nope we give them permission when we agree to their extortion contracts. No agreement... No phone service... And they ALL do it as an industry standard.
Airplane mode+off+faraday bag is the only way. But as soon as you pull it out to use it you are right back on their grid again...