Yep. Out of the starting gate, Apple forced tight constraints on background and multi-threaded processing---so tight that the first versions of the iPhone OS co

Yep. Out of the starting gate, Apple forced tight constraints on background and multi-threaded processing---so tight that the first versions of the iPhone OS couldn't support some types of application that the Android OSs could unless Apple wrote the program and could take advantage of the private APIs in the OS. But the advantage to that B&D approach was responsiveness and battery life, relative to an Android OS where any developer could write an app that would spawn an ill-behaved background thread and suck your battery.