机密八：圆角iPhone

????与四四方方的iPhone原型相比，苹果这次在曲线上大做文章。这款设计和最终版iPhone已非常接近了，只是其后盖更加圆滑。

The rounded iPhone

????In stark contrast to the boxy iPhone prototype, here Apple played around with curves. While this design more closely resembles the final iPhone, the back is more rounded.