Hello,
i searched now serveral hours to find a solution. I have background a image and i want to show these on all iOS Devices and Android Devices. What's the best solution for this? I don't really know how to handle this cause there are so many screen sizes on android. For iOS i found this probable solution
http://forums.xamarin.com/discussion/32432/background-image-for-iphone-5-iphone-6-iphone-6-plus