Hi, just got my 6s yesterday and my number got activated today.
As for the Gservices App, i keep on getting this message, "Cannot connect to server, please try again later" whenever I try to register to the app, but my data is turned on. Cellular data for gservices app is turned on as well.
Already tried uninstalling and reinstalling the app but i still get the same message.
The app seems to be working fine on my old 5s (different number).