If you’re only looking at total up/down traffic for the entire device, it might.
But we can inspect traffic per-app, including decoding the actual traffic (if you go through steps to circumvent certificate pinning).
Security researchers can, and do, look at the actual raw data coming out of apps. If voice was in there, it would be seen.
https://www.scientificamerican.com/article/women-talk-more-t...
https://developer.android.com/topic/performance/vitals/bg-ne...
The second point is why would a company do that? If the NSA or whomever wants to snoop on you, they’ll drop malware on your phone, subpoena your iCloud backups etc. not try to coerce a company to record people’s conversations when said company has no desire to do so.
https://www.techrepublic.com/article/laliga-facing-eur250k-f...
Edit: I was wrong, they were upfront with people about the purpose of recording (https://www.techrepublic.com/article/how-one-spanish-soccer-...)
> This functionality is not happening surreptitiously, as the app requests access to the microphone and geolocation service—it does not rely on a vulnerability to access these components without explicit permission
Users had to have the app open and grant the permission. They weren’t recording secretly in the background.
Here's a better article on this: https://www.techrepublic.com/article/how-one-spanish-soccer-...
From the article: "Despite this, users were not explicitly informed of the intended use of the microphone and geolocation permissions, which is central to the decision by AEPD to levy fines against LaLiga."
Sounds like they were spying while using microphone permissions, which is what the discussion is about.
It was my understanding that typically phone voice audio quality is a few kilo bits per second - not much more than a kilobyte per second. This would get positively lost in the noise of modern smartphone constant background connectivity, no?
(largely agree with your other points, though my understanding of original post was question for specifics on who actually may be checking these things rather than "somebody surely would've caught it")