OAKLAND, Calif. Facebook is pushing back on new Apple privacy rules for its mobile devices and putting app developers in the middle. Apple will soon require apps to ask users for permission to collect data on what devices they are using and to let ads follow them around on the internet. The audience network allows Facebook and Instagram advertisers to place their ads elsewhere on the internet. Facebook said that because of this change, it will no longer collect the identifier for advertisers on its own apps for iOS 14 devices. But the very least, its going to make it harder for app developers and others to grow using ads on Facebook and elsewhere."