(At 1:00 a.m. on June 8, 2010, the Apple World Developers Conference (WWDC10) officially opened at the Moscone West Exhibition Center in San Francisco. Steve Jobs, CEO of Apple, released a brand new fourth generation iPhone, the model of which is the iPhone 4. It is not the iPhone 4G or iPhone HD that people had previously guessed. From the appearance, it is the same as the iPhone 4 hand that was lost before)