Was held in San Francisco, Apple R & D meeting, Stephen Jobs holding a cell phone mounted Showcase, on display iPhone 4 for the official release. The new iPhone 4 phone in front of the glass surface, the body black, high-definition screen, is expected to reach within three years 50 million in sales. Jobs said, iPhone 4 is the first since the release of Apples iPhone, the maximum span to make the jump. "It has you seen the most beautiful shape, which we made the most accurate and beautiful phone." It is understood, iPhone 4 to perform multiple tasks simultaneously, users can run simultaneously on the plane a series of mobile phones application, but the phone has a strong five-megapixels camera and built-in LCD flash that can record high-definition video. In addition, iPhone 4 has a front camera, users can realize the first time in the iPhone, video conferencing. Jobs also proud to promote the phone screen on every inch 326 pixels, more than 300 pixels per inch level. As long as more than 300 pixels per inch point on the level of the naked eye can not distinguish the digital screen and the printed book
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