The HTML5 date element is an especially great addition in the mobile world. It triggers native controls, built for mobile devices, instead of forcing the developer to come up with a normally-complex solution. Support was not there for a while but apparently things are improving as of late.
For example:
iOS 5.1 Safari
Android 4.x Chrome:
But sadly, the native Android 4.x browser is not compatible.
I say, use it!
