right now i don't use siri at all. i've had every iphone at one time and never have i had a "personal assistant" so i suppose i'm just used to doing things the hard way. sure i would use voice control but i couldn't turn it off so why not use it my question is does having siri on use up any more CPU? having her waiting in the wings for when you might pull her up. if the answer is yes i'll leave her off. if the answer is no i'll probably turn her back on for hands free calling and such. thanks in advance to those who are helpful. to those who aren't get a life. you should not be trolling the internet at 5:30 in the morning.