Indeed, I and many others have noticed that the FB app drains the battery when not in use! Source: https://www.lifewire.com/how-facebook-messenger-apps-drains-

Indeed, I and many others have noticed that the FB app drains the battery when not in use! Source: https://www.lifewire.com/how-facebook-messenger-apps-drains-battery-3880043 https://www.lifewire.com/how-facebook-messenger-apps-drains-... > Facebook and Facebook Messenger apps for iOS and Android devices consume a lot of battery life. Besides complaints from people worldwide, authorities and analysts conducted tests. They affirmed that both are battery hogs even when the apps aren't in use. I'm not sure how one would be expected to notice a "large upload of audio" since most people don't monitor their network activity, and slowdowns get blamed on a bad connection. I'd also expect smart FB engineers would be able to figure out how to minimize network activity (eg; sampled, low-fidelity audio). EDIT: To be clear, I don't mean to say, "they use lots of battery therefore they must be spying", just that lack of battery drain isn't convincing evidence that they're not doing some sort of conversational spying.