If you're really worried about this the only thing you can really do is not carry a phone, or carry one with a hardware radio switch and only turn it on when yo

If you're really worried about this the only thing you can really do is not carry a phone, or carry one with a hardware radio switch and only turn it on when you want to use it. Of course you won't receive calls or messages, but that's not the end of the world, it's just like going back to the 1980s.