Colleagues in UX are looking for opportunities to add final polish for Wikipedia Zero related stuff in the forthcoming apps, but here are screencasts for the Wikipedia Zero experience in the alphas of the apps.
The Android screencast is a little clunkier because I was using tethering and shooting from the same device to get things working and so had to string some videos together. iOS is a little less clunky because, although I also needed to use tethering, I was recording with a simulator.
-Adam