How do I use the Android Geofencing API?

Question

I have been testing the new Google Play Geofencing service API.

I downloaded the sample code from the Android developers site. Next, I ran the example code on an And

Answer 1

If you only use cellular network, the location accuracy is lower, than the accuracy of wi-fi or gps (if you open Google Maps, the blue circle is estimation of your current position - if you only use 3GP, the circle can have radius of even hundreds of meters).

Last days I am working on an app using Geofences and I figured out the following: IMHO the geofence entry is triggered only if ALL this "location estimation circle" is inside the geofence radius, i.e. if there is 100 % chance that you entered the geofence. So it depends on how big radius you set. If you set only 10 metres, it will probably work only with GPS, never with 3GP. For 3GP you will have to set radius like 1000 metres.