I really miss the voice control features of my Moto X, but now my new phone responds to "ok Jarvis activate" thanks to this app, open mic
As Featured on XDA, LifeHacker, SlashGear, and more! With Open Mic+ for Google Now, access all the commands from anywhere on your phone, while driving, or while away from your phone! Simply say "Okay Google", wave your hand, or shake your phone. Screen on, screen off Google Now will be ready to listen.