Earlier in November, during Engadget Expand 2014 Paul Eremenko, head of Project Ara, shown the so called spiral 1 a fully working prototype of Project Ara. It runs Android KitKat and applications,
The prototype worked perfectly (finally) throughout the show, also when modules were hot-swapped; taken out and being put back in or replaced while the device still running.
See the nice coverage on Egnadget >> Taking apart Google’s modular smartphone.