Siri, IOS Intelligent Personal Assistant Answers, IPhone 4S

Siri's marketing claims include that Siri adapts to the user's individual preferences over time and personalizes results, as well as accomplishing tasks such as making dinner reservations and reserving a cab.
Siri was launched as an integrated feature, although as a beta version, of the Apple iPhone 4S, launched in October 2011 & currently remains an iPhone 4S exclusive . But some hackers have ported Siri onto the iPhone 4 as well , & they claim that Siri would eventually be available for jailbroken iPhone 4 in near future .