Android is reportedly getting voice commands everywhere
 

Outside of the Moto X, hands-free voice commands on Android are limited; pick up a Nexus 5 or Galaxy S5 and you'll find that "OK Google" only works at the home screen. If Android Police's sources are accurate, though, you'll soon get to bark out...

http://www.engadget.com/2014/04/25/o...=rss_truncated