We already knew this was happening at least a decade ago when people realized why Facebook and Instagram needed unrestricted microphone permissions.
This is why I generally ensure my phone is configured ahead of time to block ads in most cases. I don’t need this garbage on my device.
As for how they could listen? It’s pretty easy.
By waiting until the phone is completely still and potentially on a charger, it can collect a lot of data. Phones typically live on the nightstand by your bed at night; and could be listening intently when charging.
Similarly it could start listening when it hears extended conversations; simply by listening to the microphone for human speech every x minutes for y minutes. Then it can record snippets; encode them quickly and upload them for processing. This would be thermally undetectable.
Finally it could simply start listening in certain situations; like when it detects other devices (via BT). Then it could simply capture as many small snippets of your conversation as it could.
Aren’t they all already listening always? I mean, how else does it hear you say “Ay yo Siri” otherwise?
the phone’s processor has the wake up word hardcoded, so it’s not like an ad company can add a new one on a whim. and it uses passive listening, so it’s not recording everything you say - I’ve seen it compared to sitting in a class and not paying attention until the teacher says your name.
Have you seen this code though? Every time I hear a statement like that, I have to wonder if you’re all just taking their word for it.
I don’t take their word for it, unless they show me that code and prove that it is the code running on all the devices in use.