Set Android player settings to jp.radiumsoftware.unitywebviewexample && <meta-data android:name="unityplayer.ForwardNativeEventsToDalvik" android:value="true" /> for old devices that launch "Failed to receive dispatch signal.  status=-11" it **works**, but the spam-log is still there: http://forum.unity3d.com/threads/unityplayernativeactivity-failed-to-receive-dispatch-signal.185652/#post-1280315