What is the iPhone?
The iPhone is a line of Internet- and multimedia-enabled smartphones marketed by Apple Inc. The first iPhone was unveiled by Steve Jobs, then CEO of Apple, on January 9, 2007, and released on June 29, 2007. The 5th generation iPhone, the iPhone 4S, was announced on October 4, 2011, and released 10 days later.
An iPhone can function as a video camera (video recording was not a standard feature until the iPhone 3GS was released), a camera phone, a portable media player, and an Internet client with email and web browsing capabilities, can send texts and receive visual voicemail, and has both Wi-Fi and 3G connectivity. The user interface is built around the device's multi-touch screen, including a virtual keyboard rather than a physical one.
Third-party as well as Apple application software is available from the App Store, which launched in mid-2008 and now has over 500,000 "apps" approved by Apple. These apps have diverse functions, including games, reference, GPS navigation, social networking, security and advertising for television shows, films, and celebrities.
There are five generations of iPhone models, each accompanied by one of the five major releases of iOS (formerly iPhone OS). The original iPhone was a GSM phone, and established design precedents, such as screen size and button placement, that have persisted through all models. The iPhone 3G added 3G cellular network capabilities and A-GPS location. The iPhone 3GS added a compass, faster processor, and higher resolution camera, including video recording at 480p.
The iPhone 4 has a rear-facing camera (720p video) and a front facing camera (at a lower resolution) for FaceTime video calling and for use in other apps like Skype. The iPhone 4 featured a higher-resolution 960x640 display; it was released on June 24, 2010. In the U.S., AT&T was the only authorized carrier until February 10, 2011, when a CDMA version of the iPhone 4 launched for Verizon. On October 4, 2011, Apple announced the iPhone 4S.
The iPhone 4S added a higher resolution camera (8 megapixel) with 1080p video recording, face detection, and video stabilization, a faster, dual core processor, support for both GSM/UMTS and CDMA on one chip, GLONASS support and a natural language voice control system called Siri. It is available in 16 GB and 32 GB, as well as a new 64 GB capacity.
What is Siri?
Siri is an intelligent software assistant and knowledge navigator functioning as a personal assistant application for iOS. The application uses a natural language user interface to answer questions, make recommendations, and perform actions by delegating requests to a set of web services. Apple claims that the software adapts to the user's individual preferences over time and personalizes results, as well as accomplishing tasks such as finding recommendations for nearby restaurants, or getting directions.
Siri was originally introduced as an iOS application available in the App Store. Siri was acquired by Apple Inc. on April 28, 2010. Siri had announced that their software would be available for BlackBerry and for Android-powered phones, but all development efforts for non-Apple platforms were cancelled after Apple's purchase.
Siri is now an integrated part of iOS 5, and available only on the iPhone 4S, launched on October 4, 2011. Despite this, hackers were able to adapt Siri in previous iPhones. On November 8, 2011, Apple publicly announced that it had no plans to support Siri on any of its older devices.
How do I jailbreak?
iPhone 3gs, iPhone 4, iPod & iPad 1: Download Redsnow (https://sites.google.com/a/iphone-dev.com/files/home/redsn0w_win_0.9.10b2.zip) and follow the onscreen instructions, once done the Cydia app should be installed on your phones homescreen.
iPhone 4s & iPad 2: Download Absinthe (http://cache.greenpois0n.com/dl/absinthe-win-0.2.zip) again follow the onscreen instructions and voila! Cydia is finally available on an A5 device!
(Note: Jailbreaking (at the moment) is still legal and will not affect your devices warranty. If your phone needs repairing just restore to the official Apple OS and everything will be fine. Also GRCade does not condone the use of jailbreaking for illegal downloads of apps, therefore I will not provide links to Cydia repos and App download websites)
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