Hacker News Reader

> Really, I don't see why Facebook wouldn't monitor audio like this for targeting ads.

Horrible battery life?

From another comment [0] in this thread:

> Remember the time they kept the app open in the background on iOS devices by sending an empty audio buffer to the phone for playback?

> People started discovering that after iOS introduced the battery/power usage section in the Settings app.

They couldn't do it 24/7, of course, but they could certainly take "samples" at regular intervals or in certain locations or something. From my own experience, it doesn't seem that Facebook has ever been worried about battery life or preserving it.

[0]: https://news.ycombinator.com/item?id=15580748

What would be the purpose of taking "samples"? How is this possibly supposed to work?

Anecdotally, Facebook battery performance is pretty poor, it's always the app that drains my battery the fastest. I don't think they care about power consumption.

There's a very significant difference between "Facebook's battery impact is pretty shitty because the app is clunky" and "this would mean the average smartphone standby time would be two hours because it would require a phenomenal amount of power."

Reply on news.ycombinator.com