Sometimes crossing the room to pick up your iPhone and use it is just too much effort, and that's what you have to do to use Siri on your regular iPhone. Fortunately, Hands-Free Control for jailbroken iPhones lets you use Siri without ever lifting a finger. The app lets you activate Siri just by calling its name. Hands-Free Control even works when your iPhone is in Sleep Mode, snapping Siri to attention to help you out.