Good point, I'm assuming things here and should have made that explicit. It's pretty rare to have this kind of thing done on the device these days, but this ex

Good point, I'm assuming things here and should have made that explicit. It's pretty rare to have this kind of thing done on the device these days, but this example has a trade-off between the app using a lot of battery and using a lot of bandwidth so it's possible something else is going on. You could probably get a good idea just by monitoring bandwidth usage while this feature is processing a new picture. Perhaps I'm too used to the standard approach of "slurp everything because the users won't know or care and we can use that personal data to train models/sell/etc." and very biased against Facebook when it comes to privacy issues.