JustMock for Devices is a version of JustMock that allows you to use the familiar JustMock syntax to create, arrange and use mocks in tests that run on devices. It supports Windows Phone and Xamarin Android/iOS and works both in the emulator/simulator and on the devices. You can use it both with Visual Studio on Windows and with Xamarin Studio on Mac. The feature set of JustMock for Devices is similar to that of JustMock Lite – you can mock interfaces, virtual members on classes that can be sub-classed and delegates. All arrangement and assertion features are supported except a few exotic ones (e.g. Wait.For, SetInterceptionFilter) The package will be delivered through the JustMock and JustMock Trial installers. Now it is available in the latest internal build of JustMock in a Beta stage. Installation in all cases is done through the NuGet package manager, but you need to install JustMock first.