Samsung allshare hub... dongle.

[JenD8034]

After plugging in the Samsung allshare hub and connecting to my phone, 'device not supported' shows up on my television screen.
Is it my tv?

 

[SpookDroid]

Usually AllShare things work only with Samsung devices, but the dongle does list WiFi-Display as compatible. Your phone, however, I think doesn't use WiFi-Display for screen mirroring but maybe Miracast? That, I believe, is not supported by the dongle.

If you have a Samsung device to test, you can try that and see if that phone can stream content to the Dongle and that way you can rule out it being the dongle and/or the TV.