New Delhi, Sept. 9 -- Apple has unveiled its first foldable iPhone, dubbed iPhone Duo, with John Ternus taking the stage to introduce the device at the company's much-awaited launch event on Wednesday.

The Duo is sized and shaped like a passport, with rounded edges. It opens to a wide horizontal screen that can also be viewed vertically. There is a smaller single screen on the front, when the phone is folded. When open, it is Apple's thinnest phone, the company said.

Speaking about the new device, Ternus noted, "iPhone Duo is unlike any iPhone you've experienced before. It's entirely new and at the same time remarkably familiar. The same size as your passport."

"For a device that plays such a central role in your life, a larger display...