Our app uses now a min Android API 19, so we don't really need the support lib anymore, only for the ViewPager would we need an alternative. But the question I was making myself is if it is better to use e.g. DialogFragment from the support lib rather than the one from the framework itself? I was thinking in a possible advantage of doing so where for example the code in the support lib has bug fixes, so if I use it I would have the fixes also on older Android versions, if not then I may get some errors/bugs etc. on older versions, have you some thoughts about this?