Facebook does, indeed, want to track your calls on device
https://phys.org/news/2018-10-facebook-track-device.html
In announcing the Portal product (as in "Hey, Portal,") Facebook bent over backward to assure consumers that it takes your privacy seriously.
That strategy took several steps backward Wednesday with the admission that yes, indeed, Facebook did want to track your calls and sell ads based on the data elsewhere on Facebook.
