Prototype Leak, 'Antennagate' and Verizon of iPhone 4

The iPhone 4 has already been amazed the world with its radically redesigned look, which Gizmodo revealed early after getting its hands on a prototype.There is no question about the fact that iPhone 4 is more smarter, more reliable and easy to operate capability.

A 3.5-inch Retina Display put pretty much every other smartphone display to shame: At 960×640 and bearing a 326ppi pixel density, it offered pixels smaller than the human eye could detect. The iPhone 4 was also encased front and back by slim slabs of glass, and ringed by an aluminum rim. This is why it is looked more beautiful. The visual conceit was slick, and Apple received kudos for its smart industrial design refresh.

Unfortunately, that aluminum rim became the source of a debacle known as "Antennagate": Because of the external antenna design of the phone, if users held it a particular way, they would experience a drop in signal strength.

The iPhone 4 debuted in June 2010, still on AT&T like its predecessors, but in January 2011, Apple expanded availability to Verizon.

Expecting an entirely differently designed iPhone 5, some Apple fans were disappointed by the announcement of merely an "iPhone 4S." However, pre-sale numbers and opening weekend sales numbers proved the 4S to be the most successful iPhone launch in Apple's history.

A major reason for the success of the 4S was its new voice-controlled virtual assistant, 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). Hackers attempting to port Siri to other iOS devices have almost succeeded, but the solution just isn't available for the masses. Others though, are more interested in hacking Siri to control other gadgets in their lives like thermostats or a rotary dial phone.

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 Black Berry and for Android-powered phones, but all development efforts for non-Apple platforms were cancelled after Apple's purchase.