Xamarin developers can use SignalR for building Android apps using Xamarin.Android 8.4.0.1 and later and iOS apps using Xamarin.iOS 11.14.0.4 and later.
It means use Xamarin.Android 8.4.0.1 to compile? or the device version must be higher than 8.4.0.1?
if there is a android is android 5.0 can it use it?