I've implemented GAv3 in my app for Android as it described in official tutorial. I'm getting the following warnings in logcat:
W/GAV3 ( 3031): Thread[GAThread,5,main]: Service unavailable (code=1), will retry.
I/GAV3 ( 3031): Thread[GAThread,5,main]: No campaign data found.
W/GAV3 ( 3031): Thread[Service Reconnect,5,main]: Service unavailable (code=1), using local store.
There is high-speed internet access, tracking id is set properly. And I see no statistics for my devices. Tested on Android 2.3 and 4.3.1.