There are many stories of individuals exchanging information near a cell phone, then finding targeted ads closely related to that information, with those same individuals claiming they did not search about that information in any internet browser. I have experienced a similar sensation, but I can usually attribute the targeted ads to some slightly related web search I made so casually that it slipped my mind.
That begs the question: are there tracking methods to generate targeted ads based on users' regular cell phone use (texting and calling, use/presence of apps)? Very similar to this Q&A: Listening to phone calls as user profiling for marketing
If more or less yes, and potentially as a way to answer that question in any case, here's a more tangible question: are there any tools to identify and block tracking methods that could be used to generate targeted ads from regular cell phone use? Even if no such tracking methods exist, perhaps there is software designed to keep a watch for it, as a part of a mobile security suite?
For example, is there a tool like Privacy Badger for smart phone applications? Privacy Badger monitors fingerprinting and tracking techniques by third parties within web pages viewed on a web browser - can any tool monitor for such behavior tracking being performed by smartphone applications, enabling users to have more control / confidence with their privacy?