Apple iPhone 4S

Siri.

Your wish is its command.

Siri on iPhone 4S lets you use your voice to send messages, schedule meetings, place phone calls, and more. Ask Siri to do things just by talking the way you talk. Siri understands what you say, knows what you mean, and even talks back. Siri is so easy to use and does so much, you'll keep finding more and more ways to use it.

It understands what you say.

Talk to Siri as you would to a person. Say something like "Tell my wife I'm running late." "Remind me to call the vet." "Any good burger joints around here?" Siri does what you say, finds the information you need, then answers you. It's like you're having a conversation with your iPhone.