Fyrd/caniuse — pull request #51 by phistuck (2012-11-11 12:00:28+00:00)
Title: Update features-json/input-datetime.json

Tested on Samsung Galaxy S III with Android 4 (Ice Cream Sandwich).
I do not have Android 4.1 (Jelly Beans) at hand, so I cannot guarantee that it works, though it makes sense it does.

While there is no indication of a specialized field in the user interface, touching a field will cause the date picker or the time picker to show up, for and for , respectively.
I have not tested other types.