After extensive work with Fanvil we were able to sucesfully complete testing with Fanvil's C400 Android Phone. The goal of this testing was to fill a need for a prospect who was looking for Google Contacts integration where inbound calls that matched any of their 4000+ contacts would populate the customized contact labels on the phone's LCD.
The good news is that the phone with some tweaks can support up to 5000 contacts in the onboard memory. You can make outbound calls from the phone's address book which will have all the synced Google Contact entries simply by press to dial.
A big thank you to the folks over at Fanvil by working with us to make this feature possible!