The end of last year Apple has launched the iPhone 4S, the phone has an unique application named Siri. 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; youâ€™ll keep finding more and more ways to use it.
Siri is currently available only on iPhone 4S. And the company has announced that they will soon bring the Siri application on their previous generation devices but the company failed.Apple has also announced that neither iPhone 3GS nor iPad 1 will get the Siri, but now you can get Siri on your iPhone 4,3GS,iPod Touch 4G,iPad and iPad 2 by using the i4Siri.So,if you want to get Siri on your device firstly, In order to get it up and running you will first need to jailbreak your device.
just follow the step-by-step installation instructions.