IMvxNavigationService is an abstraction for the native navigation. Actually, it uses ViewModel to navigate, not from View to View. That means that we do not need to use platform-specific navigation, and MvvmCross will find the correct View to show. IMvxNavigationService supports a lot of different async methods to implement navigation. You can find all the interfaces here: https://github.com/MvvmCross/MvvmCross/blob/develop/MvvmCross/Navigation/IMvxNavigationService.cs. Get started from a simple one:ViewModel without specifying the View we want to navigate to. MvvmCross will find the right view which is associated with this ViewModel.ViewModel, there is another method to do this:ViewModel has a generic param, like PostDetailViewModel:ViewModel and return it to the source ViewModel. For example, if we edit a Post, we should update the post in the PostListView after returning.