Apple celebrated the 10th anniversary of its iconic iPhone on Thursday. Since former CEO Steve Jobs debuted the original device, the company has gone on to sell more than a billion handsets worldwide, and the iPhone has become one of the most successful product categories in the electronics industry. The iPhone proved to be a major disrupter in the mobile phone category after its unveiling on June 29, 2007. At the time, the industry was dominated by companies such as Nokia, Motorola, Ericsson, BlackBerry maker Research In Motion, and Palm.