Background: With microphones being embedded in all sorts of consumer electronics, there is widespread concern that certain actors (e.g. device manufacturers, ecosystem providers, third-party apps) might exploit them to stealthily eavesdrop on users’ private conversations. Several scandals involving smart TVs, smart speakers and even connected toys have shown that these concerns are not completely unfounded.
Question: In Android and iOS, after microphone access permission was granted by the user, is there always some visual indication on the screen while audio is being recorded by ...
- third-party apps running in foreground
- third-party apps running in background
- system apps
If not, are there any notable counterexamples?