Facebook warns about iPhone privacy change that could unsettle Facebook users | CNBC

See Understanding Updates to Your Device’s Location Settings | Facebook Newsroom for Facebook's justification

"iOS 13, the forthcoming version of the iPhone software, will provide a pop-up that informs users about how many times an individual app has used background location over the past few days. Background location can be useful for many apps like maps or for Facebook functions like check-ins, but it can also be abused by app makers to collect data against the wishes of its users.

That means that some Facebook users may soon be confronted with an Apple-created pop-up telling them that Facebook has used their location in the background some number of times over the past few days, and including a map marking where Facebook asked the phone for its coordinates."

Facebook warns about iPhone privacy change that could unsettle Facebook users | CNBC