CheckLocationSettingsAsync () Hangs when Called from OnStart()

Hi,

I am trying to check the Fused Location API settings during Xamarin Forms OnStart() event by following this example: https://github.com/xamarin/monodroid-samples/blob/master/google-services/Location/LocationSettings/LocationSettings/MainActivity.cs

However when I call await LocationServices.SettingsApi.CheckLocationSettingsAsync() it just hangs and never returns.

Any ideas? Does anyone have a working example of the fused location provider used with XF ?

Thanks