I am developing an app that supports Android >= 4.0. It uses fragments from the android.app package. As I am facing problems with the older fragment implementat
One big reason to stick with the SupportFragment for a while is that you do not have access to the ChildFragmentManager until API 17. The support library will give you a support version of the child fragment manager.
This becomes a big deal if you have fragments that contain other fragments. This is common in tablet applications with a good deal of complexity and/or your overall architecture is based on either a tabbed layout or uses the navigation drawer.