I used to work for a mobile advertiser, and we installed hella bloatware on phones.
This idea was floated a couple times but was deemed not very effective cause you'd have to store and process hours and hours of audio data that didn't tell us much more than just having a week or so of GPS data, your Facebook profile, and your phone IMEI.
It's pretty easy to see if you're near a Popeyes and what other IMEIs are connecting to the same tower, extrapolate that to you being near your wife and you and your wife thinking about shit on the Popeyes menu.
Boom targeted ad/video for fried chicken.
The rest is general tech paranoia leading to Apophenia.
There's no microphones or cameras, it's just the already gigantic mountain of data anyone who uses a smartphone is constantly broadcasting getting ground through the big data machine that has been the pillar of all tech since the last recession.
Instagram at least listens thru your mic, for sure. At least on my wife’s phone, she gets targeted ads based on conversations we have in the car with no music playing
I keep my phone in a chip bag and only pull it out to LARP the preparation for the assassination Franz Ferdinand in general terms without naming actual places or names.
On the other hand, it's amazingly easy for advertisers to figure out what topics / products you're talking about without the need for constantly recording via your microphone. In most instances, it doesn't even really make sense to constantly record audio via the mic to monitor folks, other means are much more cost efficient while being just as effective. That's not to say that some app isn't or hasn't done it, just that historically speaking, it hasn't been as ubiquitous as a lot of people seem to think or imply.
Sometimes with these things, you have to apply Occam's Razor.
I stayed with some family during the holidays a few years ago and they are conspiracy theory fanatics unfortunately. The type that swear their phones are listening to everything they say. They get ads for things they've only ever talked about in person. That sort of thing.
As proof, they pointed out how the prior night the topic of old timey candy from our childhoods came up and all of a sudden they were getting news stories and facebook ads about those liquid filled wax bottle candies. To them, the only plausible explanation is that our phones were listening to us.
Except, as I pointed out, I specifically looked those wax bottle candies up later that night because I was curious if they were still for sale. They live way out in the country and there's limited cellular data, so basically everybody there that night was using the same wifi connection. Which means, our internet activity is all linked because to the outside world, we're all on the same network/IP address. Even more curious, though, nobody got ads for any of the other candy that we talked about and which I didn't specifically look up. So, if our phones were actually recording us and serving up ads based on the things we talked about, then why didn't we get ads for Blackjack gum, wax lips, and Brach's? Only the very specific one I happened to search for.
Right around the confinement my sister and I were talking about getting some seeds for my mom. Neither of us searched for seeds. From that point we both started to get ads for seeds, many for the ones we had talked about in particular.
This thing was so unequivocal that it proved to me that our phones listen. Maybe they don't analyze, but they definitely listen for words actionable for an advertising purposes.
Good thing everyone diligently reads the T&A of Pool 3d before using it. You are reading every line of text before you hit agree, and then uninstall, right?