The long anticipated iPhone 4 has finally been revealed by Apple CEO Steve Jobs. The redesign of the ever popular iPhone features two cameras and a substantially thinner design than previous models (shown in the screenshot from the Apple website on the right) and was unveiled at Apple's latest Worldwide Developers Conference in San Francisco.
The iPhone 4 boasts a stainless steel case and a new thickness of 9.3mm, at least 24% thinner than previous versions. While the display remains the same size, the pixel density has also been improved by four times. The phone will be powered using the same chip as the iPad, the A4 CPU and will offer users download and upload speeds of 7.2Mb and 5.8Mb respectively. An improved battery life will also provide 300 hours of standby, seven hours of talk time, 10 hours for WiFi and video, six hours of 3G browsing and 40 hours of music.
One of the biggest changes to the new design is the inclusion of two cameras, one set in the front to enable video calls using new app FaceTime. 5MP, 5x zoom and an LED flash are combined with HD video recording and iMovie video editing as further improvements. The iPhone 4 now also includes six-axis motion sensing, provided through a gyroscope alongside the current compass and accelerometer, and will allow apps to be controlled by waving.
Rolling out with the iPhone 4 is the new operating system iOS. The system will support iBooks, iAd and the Apple game centre as well as promising better file management, enabling the creation of different folders in which to store apps to improve organisation.
iOS also heralds the introduction of multitasking to the iPhone for the first time, allowing users to switch between apps that are open at the same time. While owners of the iPhone 3G and 3GS can upgrade to iOS, only the iPhone 4 and 3GS phones will be able to support the new multitasking feature.
Another first for the iPhone will be the inclusion of Bing, which will join Google and Yahoo as search options. While it is expected that Google will remain the default search engine, recent competition between the two companies has led to speculation that Microsoft