There are platform specific APIs for that functionality. You can't necessarily do everything on each platform that you can on a given platform, but if you want

There are platform specific APIs for that functionality. You can't necessarily do everything on each platform that you can on a given platform, but if you want some iOS or Android specific behavior you can implement it. You might have to wait a bit for new releases for features that come out in new OS versions, but that's not terribly surprising.