Keep in mind, this resulted from a scan of a single man’s iPhone:
Monitoring software used by The Washington Post on an ordinary iPhone found that no fewer than 5,400 app trackers were sending data from the phone – in some cases including sensitive data like location and phone number.
It wasn’t too long ago that people paid a little extra for an unlisted phone number. You know, for a little more privacy. What a 180. If this concerns you – and why I bother with stories like this, I really don’t know – then consider a Faraday cage, some other signal blocker, or a dumb phone (no phone if you can manage and don’t mind). Or not.